diff --git a/arcade/arcade/core/auth.py b/arcade/arcade/core/auth.py
index 354a3c9a..07656876 100644
--- a/arcade/arcade/core/auth.py
+++ b/arcade/arcade/core/auth.py
@@ -87,6 +87,15 @@ class LinkedIn(OAuth2):
         super().__init__(id=id, scopes=scopes)
 
 
+class Microsoft(OAuth2):
+    """Marks a tool as requiring Microsoft authorization."""
+
+    provider_id: str = "microsoft"
+
+    def __init__(self, *, id: Optional[str] = None, scopes: Optional[list[str]] = None):  # noqa: A002
+        super().__init__(id=id, scopes=scopes)
+
+
 class Notion(OAuth2):
     """Marks a tool as requiring Notion authorization."""
 
diff --git a/arcade/arcade/sdk/auth/__init__.py b/arcade/arcade/sdk/auth/__init__.py
index 0c61297f..4c92a5c7 100644
--- a/arcade/arcade/sdk/auth/__init__.py
+++ b/arcade/arcade/sdk/auth/__init__.py
@@ -5,6 +5,7 @@ from arcade.core.auth import (
     GitHub,
     Google,
     LinkedIn,
+    Microsoft,
     Notion,
     OAuth2,
     Reddit,
@@ -23,6 +24,7 @@ __all__ = [
     "GitHub",
     "Google",
     "LinkedIn",
+    "Microsoft",
     "Notion",
     "OAuth2",
     "Reddit",