diff --git a/src/viser/_messages.py b/src/viser/_messages.py
index d6c5d7694..9bdbed6ef 100644
--- a/src/viser/_messages.py
+++ b/src/viser/_messages.py
@@ -724,6 +724,8 @@ class IcosphereProps:
     """Number of subdivisions to use when creating the icosphere."""
     color: Tuple[int, int, int]
     """Color of the icosphere as RGB integers. """
+    scale: Tuple[float, float, float]
+    """Tuple of (x, y, z) scaling values for the icosphere."""
     wireframe: bool
     """Boolean indicating if the icosphere should be rendered as a wireframe.
     """
diff --git a/src/viser/_scene_api.py b/src/viser/_scene_api.py
index 7c296cfda..19a8956cc 100644
--- a/src/viser/_scene_api.py
+++ b/src/viser/_scene_api.py
@@ -2012,6 +2012,7 @@ def add_icosphere(
         color: RgbTupleOrArray = (255, 0, 0),
         *,
         subdivisions: int = 3,
+        scale: tuple[float, float, float] = (1.0, 1.0, 1.0),
         wireframe: bool = False,
         opacity: float | None = None,
         material: Literal["standard", "toon3", "toon5"] = "standard",
@@ -2032,6 +2033,7 @@ def add_icosphere(
             color: Color of the icosphere as an RGB tuple.
             subdivisions: Number of subdivisions to use when creating the icosphere.
             wireframe: Boolean indicating if the icosphere should be rendered as a wireframe.
+            scale: Tuple of (x, y, z) scaling values for the icosphere.
             opacity: Opacity of the icosphere. None means opaque.
             material: Material type of the icosphere ('standard', 'toon3', 'toon5').
             flat_shading: Whether to do flat shading.
@@ -2054,6 +2056,7 @@ def add_icosphere(
                 radius=radius,
                 subdivisions=subdivisions,
                 color=_encode_rgb(color),
+                scale=scale,
                 wireframe=wireframe,
                 opacity=opacity,
                 flat_shading=flat_shading,
diff --git a/src/viser/client/src/WebsocketMessages.ts b/src/viser/client/src/WebsocketMessages.ts
index 48b7efb4e..2918a0c5c 100644
--- a/src/viser/client/src/WebsocketMessages.ts
+++ b/src/viser/client/src/WebsocketMessages.ts
@@ -281,6 +281,7 @@ export interface IcosphereMessage {
     radius: number;
     subdivisions: number;
     color: [number, number, number];
+    scale: [number, number, number];
     wireframe: boolean;
     opacity: number | null;
     flat_shading: boolean;
diff --git a/src/viser/client/src/mesh/IcosphereMesh.tsx b/src/viser/client/src/mesh/IcosphereMesh.tsx
index 3d3d6a8c8..577f835b1 100644
--- a/src/viser/client/src/mesh/IcosphereMesh.tsx
+++ b/src/viser/client/src/mesh/IcosphereMesh.tsx
@@ -65,11 +65,14 @@ export const IcosphereMesh = React.forwardRef<
     });
   }, [shadowOpacity]);
 
+  // Calculate scaling values.
+  const scale = message.props.scale.map((s: number) => s * message.props.radius) as [number, number, number];
+
   return (
     <group ref={ref}>
       <mesh
         geometry={geometry}
-        scale={message.props.radius}
+        scale={scale}
         material={material}
         castShadow={message.props.cast_shadow}
         receiveShadow={message.props.receive_shadow === true}