diff --git a/build.gradle b/build.gradle
index ccca72b..8adc301 100644
--- a/build.gradle
+++ b/build.gradle
@@ -73,6 +73,8 @@ dependencies {
 
 	// AOP
 	implementation 'org.springframework.boot:spring-boot-starter-aop'
+
+	implementation 'org.springframework.boot:spring-boot-starter-webflux'
 }
 
 tasks.named('test') {
diff --git a/src/main/java/com/sayup/SayUp/config/SecurityConfig.java b/src/main/java/com/sayup/SayUp/config/SecurityConfig.java
index 359deef..0fae831 100644
--- a/src/main/java/com/sayup/SayUp/config/SecurityConfig.java
+++ b/src/main/java/com/sayup/SayUp/config/SecurityConfig.java
@@ -37,7 +37,8 @@ public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Excepti
         final String[] PUBLIC_URLS = {
                 "/api/auth/**",      // 인증 관련 API
                 "/swagger-ui/**",    // Swagger UI
-                "/v3/api-docs/**"    // OpenAPI 문서
+                "/v3/api-docs/**",   // OpenAPI 문서
+                "/callback/**"       // 카카오 로그인
         };
 
         return http
diff --git a/src/main/java/com/sayup/SayUp/controller/AuthController.java b/src/main/java/com/sayup/SayUp/controller/AuthController.java
index 53c3756..583f4ae 100644
--- a/src/main/java/com/sayup/SayUp/controller/AuthController.java
+++ b/src/main/java/com/sayup/SayUp/controller/AuthController.java
@@ -4,19 +4,19 @@
 import com.sayup.SayUp.dto.AuthResponseDTO;
 import com.sayup.SayUp.service.AuthService;
 import jakarta.validation.Valid;
+import lombok.AllArgsConstructor;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.Map;
+
 @RestController
 @RequestMapping("/api/auth")
+@AllArgsConstructor
 public class AuthController {
     private final AuthService authService;
 
-    public AuthController(AuthService authService) {
-        this.authService = authService;
-    }
-
     /**
      * 사용자 회원가입 처리
      * @param authRequestDTO 사용자 이메일 및 비밀번호 정보
diff --git a/src/main/java/com/sayup/SayUp/entity/User.java b/src/main/java/com/sayup/SayUp/entity/User.java
index a54a388..2e6d6e1 100644
--- a/src/main/java/com/sayup/SayUp/entity/User.java
+++ b/src/main/java/com/sayup/SayUp/entity/User.java
@@ -1,6 +1,7 @@
 package com.sayup.SayUp.entity;
 
 import jakarta.persistence.*;
+import lombok.Builder;
 import lombok.Getter;
 import lombok.Setter;
 
@@ -13,6 +14,9 @@
 @Getter
 @Setter
 public class User {
+    public User() {
+    }
+
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long userId;
@@ -31,6 +35,8 @@ public class User {
     @Column(nullable = false, updatable = false)
     private LocalDateTime createdAt = LocalDateTime.now();
 
+    private String role;
+
     @Override
     public boolean equals(Object obj) {
         if (this == obj) return true;
diff --git a/src/main/java/com/sayup/SayUp/kakao/controller/KakaoLoginController.java b/src/main/java/com/sayup/SayUp/kakao/controller/KakaoLoginController.java
new file mode 100644
index 0000000..30bd7f9
--- /dev/null
+++ b/src/main/java/com/sayup/SayUp/kakao/controller/KakaoLoginController.java
@@ -0,0 +1,44 @@
+package com.sayup.SayUp.kakao.controller;
+
+import com.sayup.SayUp.dto.AuthResponseDTO;
+import com.sayup.SayUp.kakao.dto.KakaoUserInfoResponseDto;
+import com.sayup.SayUp.kakao.service.KakaoService;
+import com.sayup.SayUp.security.JwtTokenProvider;
+import com.sayup.SayUp.service.AuthService;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.io.IOException;
+
+@Slf4j
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("")
+public class KakaoLoginController {
+
+    private final KakaoService kakaoService;
+    private final JwtTokenProvider jwtTokenProvider;
+    private final AuthService authService;
+
+    @GetMapping("/callback")
+    public ResponseEntity<?> callback(@RequestParam("code") String code) throws IOException {
+        String accessToken = kakaoService.getAccessTokenFromKakao(code);
+
+        KakaoUserInfoResponseDto userInfo = kakaoService.getUserInfo(accessToken);
+
+        String email = null;
+        String jwt = null;
+        if (userInfo.getKakaoAccount() != null) {
+            email = userInfo.getKakaoAccount().getEmail();
+            authService.loadOrCreateUser(email);
+            jwt = jwtTokenProvider.createTokenFromEmail(email);
+        }
+
+        return ResponseEntity.ok(new AuthResponseDTO(jwt, email));
+    }
+}
diff --git a/src/main/java/com/sayup/SayUp/kakao/controller/KakaoLoginPageController.java b/src/main/java/com/sayup/SayUp/kakao/controller/KakaoLoginPageController.java
new file mode 100644
index 0000000..d1c5d6c
--- /dev/null
+++ b/src/main/java/com/sayup/SayUp/kakao/controller/KakaoLoginPageController.java
@@ -0,0 +1,26 @@
+package com.sayup.SayUp.kakao.controller;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+@RequestMapping("/login")
+public class KakaoLoginPageController {
+
+    @Value("${kakao.client_id}")
+    private String client_id;
+
+    @Value("${kakao.redirect_uri}")
+    private String redirect_uri;
+
+    @GetMapping("/page")
+    public String loginPage(Model model) {
+        String location = "https://kauth.kakao.com/oauth/authorize?response_type=code&client_id="+client_id+"&redirect_uri="+redirect_uri;
+        model.addAttribute("location", location);
+
+        return "login";
+    }
+}
diff --git a/src/main/java/com/sayup/SayUp/kakao/dto/KakaoLoginDto.java b/src/main/java/com/sayup/SayUp/kakao/dto/KakaoLoginDto.java
new file mode 100644
index 0000000..076d305
--- /dev/null
+++ b/src/main/java/com/sayup/SayUp/kakao/dto/KakaoLoginDto.java
@@ -0,0 +1,14 @@
+package com.sayup.SayUp.kakao.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+
+@AllArgsConstructor
+@Builder
+@Getter
+public class KakaoLoginDto {
+
+    public String accessToken;
+    public String refreshToken;
+}
diff --git a/src/main/java/com/sayup/SayUp/kakao/dto/KakaoTokenResponseDto.java b/src/main/java/com/sayup/SayUp/kakao/dto/KakaoTokenResponseDto.java
new file mode 100644
index 0000000..8ad2636
--- /dev/null
+++ b/src/main/java/com/sayup/SayUp/kakao/dto/KakaoTokenResponseDto.java
@@ -0,0 +1,27 @@
+package com.sayup.SayUp.kakao.dto;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor //역직렬화를 위한 기본 생성자
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class KakaoTokenResponseDto {
+
+    @JsonProperty("token_type")
+    public String tokenType;
+    @JsonProperty("access_token")
+    public String accessToken;
+    @JsonProperty("id_token")
+    public String idToken;
+    @JsonProperty("expires_in")
+    public Integer expiresIn;
+    @JsonProperty("refresh_token")
+    public String refreshToken;
+    @JsonProperty("refresh_token_expires_in")
+    public Integer refreshTokenExpiresIn;
+    @JsonProperty("scope")
+    public String scope;
+}
\ No newline at end of file
diff --git a/src/main/java/com/sayup/SayUp/kakao/dto/KakaoUserInfoResponseDto.java b/src/main/java/com/sayup/SayUp/kakao/dto/KakaoUserInfoResponseDto.java
new file mode 100644
index 0000000..2cf7978
--- /dev/null
+++ b/src/main/java/com/sayup/SayUp/kakao/dto/KakaoUserInfoResponseDto.java
@@ -0,0 +1,190 @@
+package com.sayup.SayUp.kakao.dto;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.util.Date;
+import java.util.HashMap;
+
+@Getter
+@NoArgsConstructor //역직렬화를 위한 기본 생성자
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class KakaoUserInfoResponseDto {
+
+    //회원 번호
+    @JsonProperty("id")
+    public Long id;
+
+    //자동 연결 설정을 비활성화한 경우만 존재.
+    //true : 연결 상태, false : 연결 대기 상태
+    @JsonProperty("has_signed_up")
+    public Boolean hasSignedUp;
+
+    //서비스에 연결 완료된 시각. UTC
+    @JsonProperty("connected_at")
+    public Date connectedAt;
+
+    //카카오싱크 간편가입을 통해 로그인한 시각. UTC
+    @JsonProperty("synched_at")
+    public Date synchedAt;
+
+    //사용자 프로퍼티
+    @JsonProperty("properties")
+    public HashMap<String, String> properties;
+
+    //카카오 계정 정보
+    @JsonProperty("kakao_account")
+    public KakaoAccount kakaoAccount;
+
+    //uuid 등 추가 정보
+    @JsonProperty("for_partner")
+    public Partner partner;
+
+    @Getter
+    @NoArgsConstructor
+    @JsonIgnoreProperties(ignoreUnknown = true)
+    public class KakaoAccount {
+
+        //프로필 정보 제공 동의 여부
+        @JsonProperty("profile_needs_agreement")
+        public Boolean isProfileAgree;
+
+        //닉네임 제공 동의 여부
+        @JsonProperty("profile_nickname_needs_agreement")
+        public Boolean isNickNameAgree;
+
+        //프로필 사진 제공 동의 여부
+        @JsonProperty("profile_image_needs_agreement")
+        public Boolean isProfileImageAgree;
+
+        //사용자 프로필 정보
+        @JsonProperty("profile")
+        public Profile profile;
+
+        //이름 제공 동의 여부
+        @JsonProperty("name_needs_agreement")
+        public Boolean isNameAgree;
+
+        //카카오계정 이름
+        @JsonProperty("name")
+        public String name;
+
+        //이메일 제공 동의 여부
+        @JsonProperty("email_needs_agreement")
+        public Boolean isEmailAgree;
+
+        //이메일이 유효 여부
+        // true : 유효한 이메일, false : 이메일이 다른 카카오 계정에 사용돼 만료
+        @JsonProperty("is_email_valid")
+        public Boolean isEmailValid;
+
+        //이메일이 인증 여부
+        //true : 인증된 이메일, false : 인증되지 않은 이메일
+        @JsonProperty("is_email_verified")
+        public Boolean isEmailVerified;
+
+        //카카오계정 대표 이메일
+        @JsonProperty("email")
+        public String email;
+
+        //연령대 제공 동의 여부
+        @JsonProperty("age_range_needs_agreement")
+        public Boolean isAgeAgree;
+
+        //연령대
+        //참고 https://developers.kakao.com/docs/latest/ko/kakaologin/rest-api#req-user-info
+        @JsonProperty("age_range")
+        public String ageRange;
+
+        //출생 연도 제공 동의 여부
+        @JsonProperty("birthyear_needs_agreement")
+        public Boolean isBirthYearAgree;
+
+        //출생 연도 (YYYY 형식)
+        @JsonProperty("birthyear")
+        public String birthYear;
+
+        //생일 제공 동의 여부
+        @JsonProperty("birthday_needs_agreement")
+        public Boolean isBirthDayAgree;
+
+        //생일 (MMDD 형식)
+        @JsonProperty("birthday")
+        public String birthDay;
+
+        //생일 타입
+        // SOLAR(양력) 혹은 LUNAR(음력)
+        @JsonProperty("birthday_type")
+        public String birthDayType;
+
+        //성별 제공 동의 여부
+        @JsonProperty("gender_needs_agreement")
+        public Boolean isGenderAgree;
+
+        //성별
+        @JsonProperty("gender")
+        public String gender;
+
+        //전화번호 제공 동의 여부
+        @JsonProperty("phone_number_needs_agreement")
+        public Boolean isPhoneNumberAgree;
+
+        //전화번호
+        //국내 번호인 경우 +82 00-0000-0000 형식
+        @JsonProperty("phone_number")
+        public String phoneNumber;
+
+        //CI 동의 여부
+        @JsonProperty("ci_needs_agreement")
+        public Boolean isCIAgree;
+
+        //CI, 연계 정보
+        @JsonProperty("ci")
+        public String ci;
+
+        //CI 발급 시각, UTC
+        @JsonProperty("ci_authenticated_at")
+        public Date ciCreatedAt;
+
+        @Getter
+        @NoArgsConstructor
+        @JsonIgnoreProperties(ignoreUnknown = true)
+        public class Profile {
+
+            //닉네임
+            @JsonProperty("nickname")
+            public String nickName;
+
+            //프로필 미리보기 이미지 URL
+            @JsonProperty("thumbnail_image_url")
+            public String thumbnailImageUrl;
+
+            //프로필 사진 URL
+            @JsonProperty("profile_image_url")
+            public String profileImageUrl;
+
+            //프로필 사진 URL 기본 프로필인지 여부
+            //true : 기본 프로필, false : 사용자 등록
+            @JsonProperty("is_default_image")
+            public String isDefaultImage;
+
+            //닉네임이 기본 닉네임인지 여부
+            //true : 기본 닉네임, false : 사용자 등록
+            @JsonProperty("is_default_nickname")
+            public Boolean isDefaultNickName;
+
+        }
+    }
+
+    @Getter
+    @NoArgsConstructor
+    @JsonIgnoreProperties(ignoreUnknown = true)
+    public class Partner {
+        //고유 ID
+        @JsonProperty("uuid")
+        public String uuid;
+    }
+
+}
\ No newline at end of file
diff --git a/src/main/java/com/sayup/SayUp/kakao/service/KakaoService.java b/src/main/java/com/sayup/SayUp/kakao/service/KakaoService.java
new file mode 100644
index 0000000..61ec55e
--- /dev/null
+++ b/src/main/java/com/sayup/SayUp/kakao/service/KakaoService.java
@@ -0,0 +1,87 @@
+package com.sayup.SayUp.kakao.service;
+
+import com.sayup.SayUp.kakao.dto.KakaoTokenResponseDto;
+import com.sayup.SayUp.kakao.dto.KakaoUserInfoResponseDto;
+import io.netty.handler.codec.http.HttpHeaderValues;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatusCode;
+import org.springframework.stereotype.Service;
+import org.springframework.web.reactive.function.client.WebClient;
+import reactor.core.publisher.Mono;
+
+
+@Slf4j
+@RequiredArgsConstructor
+@Service
+public class KakaoService {
+
+    private String clientId;
+    private final String KAUTH_TOKEN_URL_HOST ;
+    private final String KAUTH_USER_URL_HOST;
+
+    @Autowired
+    public KakaoService(@Value("${kakao.client_id}") String clientId) {
+        this.clientId = clientId;
+        KAUTH_TOKEN_URL_HOST ="https://kauth.kakao.com";
+        KAUTH_USER_URL_HOST = "https://kapi.kakao.com";
+    }
+
+    public String getAccessTokenFromKakao(String code) {
+
+        KakaoTokenResponseDto kakaoTokenResponseDto = WebClient.create(KAUTH_TOKEN_URL_HOST).post()
+                .uri(uriBuilder -> uriBuilder
+                        .scheme("https")
+                        .path("/oauth/token")
+                        .queryParam("grant_type", "authorization_code")
+                        .queryParam("client_id", clientId)
+                        .queryParam("code", code)
+                        .build(true))
+                .header(HttpHeaders.CONTENT_TYPE, HttpHeaderValues.APPLICATION_X_WWW_FORM_URLENCODED.toString())
+                .retrieve()
+                //TODO : Custom Exception
+                .onStatus(HttpStatusCode::is4xxClientError, clientResponse -> Mono.error(new RuntimeException("Invalid Parameter")))
+                .onStatus(HttpStatusCode::is5xxServerError, clientResponse -> Mono.error(new RuntimeException("Internal Server Error")))
+                .bodyToMono(KakaoTokenResponseDto.class)
+                .block();
+
+
+        log.info(" [Kakao Service] Access Token ------> {}", kakaoTokenResponseDto.getAccessToken());
+        log.info(" [Kakao Service] Refresh Token ------> {}", kakaoTokenResponseDto.getRefreshToken());
+        //제공 조건: OpenID Connect가 활성화 된 앱의 토큰 발급 요청인 경우 또는 scope에 openid를 포함한 추가 항목 동의 받기 요청을 거친 토큰 발급 요청인 경우
+        log.info(" [Kakao Service] Id Token ------> {}", kakaoTokenResponseDto.getIdToken());
+        log.info(" [Kakao Service] Scope ------> {}", kakaoTokenResponseDto.getScope());
+
+        return kakaoTokenResponseDto.getAccessToken();
+    }
+
+
+
+
+    public KakaoUserInfoResponseDto getUserInfo(String accessToken) {
+
+        KakaoUserInfoResponseDto userInfo = WebClient.create(KAUTH_USER_URL_HOST)
+                .get()
+                .uri(uriBuilder -> uriBuilder
+                        .scheme("https")
+                        .path("/v2/user/me")
+                        .build(true))
+                .header(HttpHeaders.AUTHORIZATION, "Bearer " + accessToken) // access token 인가
+                .header(HttpHeaders.CONTENT_TYPE, HttpHeaderValues.APPLICATION_X_WWW_FORM_URLENCODED.toString())
+                .retrieve()
+                //TODO : Custom Exception
+                .onStatus(HttpStatusCode::is4xxClientError, clientResponse -> Mono.error(new RuntimeException("Invalid Parameter")))
+                .onStatus(HttpStatusCode::is5xxServerError, clientResponse -> Mono.error(new RuntimeException("Internal Server Error")))
+                .bodyToMono(KakaoUserInfoResponseDto.class)
+                .block();
+
+        log.info("[ Kakao Service ] Auth ID ---> {} ", userInfo.getId());
+        log.info("[ Kakao Service ] NickName ---> {} ", userInfo.getKakaoAccount().getProfile().getNickName());
+        log.info("[ Kakao Service ] ProfileImageUrl ---> {} ", userInfo.getKakaoAccount().getProfile().getProfileImageUrl());
+
+        return userInfo;
+    }
+}
diff --git a/src/main/java/com/sayup/SayUp/security/JwtTokenProvider.java b/src/main/java/com/sayup/SayUp/security/JwtTokenProvider.java
index 003b6c9..ccc644e 100644
--- a/src/main/java/com/sayup/SayUp/security/JwtTokenProvider.java
+++ b/src/main/java/com/sayup/SayUp/security/JwtTokenProvider.java
@@ -52,6 +52,19 @@ public String createToken(Authentication authentication) {
                 .compact();
     }
 
+    public String createTokenFromEmail(String email) {
+        Date now = new Date();
+        Date validity = new Date(now.getTime() + validityInMilliseconds);
+
+        return Jwts.builder()
+                .setSubject(email)  // 이메일을 subject로 설정
+                .claim("roles", "ROLE_USER")  // 기본 권한 설정 (필요하면 변경)
+                .setIssuedAt(now)
+                .setExpiration(validity)
+                .signWith(secretKey, SignatureAlgorithm.HS256)
+                .compact();
+    }
+
     /**
      * JWT 토큰 유효성 검증
      * @param token 검증할 JWT 토큰
diff --git a/src/main/java/com/sayup/SayUp/service/AuthService.java b/src/main/java/com/sayup/SayUp/service/AuthService.java
index a3bc369..46094cd 100644
--- a/src/main/java/com/sayup/SayUp/service/AuthService.java
+++ b/src/main/java/com/sayup/SayUp/service/AuthService.java
@@ -66,6 +66,15 @@ public void register(AuthRequestDTO authRequestDTO) {
         logger.info("User registered successfully with email: {}", authRequestDTO.getEmail());
     }
 
+    // 카카오 로그인 시 사용자 자동 등록
+    public void loadOrCreateUser(String email) {
+        User user = new User();
+        user.setEmail(email);
+        user.setPassword(passwordEncoder.encode("kakao_user")); // // OAuth 사용자는 비밀번호를 따로 설정하지 않음
+
+        userRepository.save(user);
+    }
+
     /**
      * Spring Security UserDetailsService 구현
      * @param email 사용자 이메일
@@ -107,6 +116,8 @@ public AuthResponseDTO login(AuthRequestDTO authRequestDTO) {
         return new AuthResponseDTO(jwt, authRequestDTO.getEmail());
     }
 
+
+
     /**
      * 토큰을 블랙리스트에 추가
      * @param token 무효화할 토큰
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index 745ebdb..803c755 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -39,3 +39,6 @@ springdoc.swagger-ui.operations-sorter=alpha
 
 # API ?? ??
 springdoc.packages-to-scan=com.sayup.SayUp.controller
+
+kakao.client_id=${KAKAO}
+kakao.redirect_uri=http://localhost:8080/callback
diff --git a/src/main/resources/templates/login.html b/src/main/resources/templates/login.html
new file mode 100644
index 0000000..bdacabc
--- /dev/null
+++ b/src/main/resources/templates/login.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>KakaoLogin</title>
+</head>
+<body>
+<div class="container" style="display: flex; justify-content: center; align-content: center; align-items: center; flex-direction: column; margin: 200px auto; ">
+    <h1>카카오 로그인</h1>
+    <a th:href="${location}">
+        <img src="/kakao_login_medium_narrow.png" >
+    </a>
+</div>
+</body>
+</html>
\ No newline at end of file