diff --git a/ollama/__init__.py b/ollama/__init__.py
index 92bba280..e72e81f1 100644
--- a/ollama/__init__.py
+++ b/ollama/__init__.py
@@ -15,6 +15,8 @@
   ShowResponse,
   StatusResponse,
   Tool,
+  ToolChoice,
+  ToolChoiceFunction,
   WebFetchResponse,
   WebSearchResponse,
 )
@@ -37,6 +39,8 @@
   'ShowResponse',
   'StatusResponse',
   'Tool',
+  'ToolChoice',
+  'ToolChoiceFunction',
   'WebFetchResponse',
   'WebSearchResponse',
 ]
diff --git a/ollama/_client.py b/ollama/_client.py
index 18cb0fb4..d529617b 100644
--- a/ollama/_client.py
+++ b/ollama/_client.py
@@ -67,6 +67,8 @@
   ShowResponse,
   StatusResponse,
   Tool,
+  ToolChoice,
+  ToolChoiceFunction,
   WebFetchRequest,
   WebFetchResponse,
   WebSearchRequest,
@@ -312,6 +314,7 @@ def chat(
     messages: Optional[Sequence[Union[Mapping[str, Any], Message]]] = None,
     *,
     tools: Optional[Sequence[Union[Mapping[str, Any], Tool, Callable]]] = None,
+    tool_choice: Optional[Union[ToolChoice, Mapping[str, Any]]] = None,
     stream: Literal[False] = False,
     think: Optional[Union[bool, Literal['low', 'medium', 'high']]] = None,
     logprobs: Optional[bool] = None,
@@ -328,6 +331,7 @@ def chat(
     messages: Optional[Sequence[Union[Mapping[str, Any], Message]]] = None,
     *,
     tools: Optional[Sequence[Union[Mapping[str, Any], Tool, Callable]]] = None,
+    tool_choice: Optional[Union[ToolChoice, Mapping[str, Any]]] = None,
     stream: Literal[True] = True,
     think: Optional[Union[bool, Literal['low', 'medium', 'high']]] = None,
     logprobs: Optional[bool] = None,
@@ -343,6 +347,7 @@ def chat(
     messages: Optional[Sequence[Union[Mapping[str, Any], Message]]] = None,
     *,
     tools: Optional[Sequence[Union[Mapping[str, Any], Tool, Callable]]] = None,
+    tool_choice: Optional[Union[ToolChoice, Mapping[str, Any]]] = None,
     stream: bool = False,
     think: Optional[Union[bool, Literal['low', 'medium', 'high']]] = None,
     logprobs: Optional[bool] = None,
@@ -392,6 +397,7 @@ def add_two_numbers(a: int, b: int) -> int:
         model=model,
         messages=list(_copy_messages(messages)),
         tools=list(_copy_tools(tools)),
+        tool_choice=tool_choice,
         stream=stream,
         think=think,
         logprobs=logprobs,
@@ -944,6 +950,7 @@ async def chat(
     messages: Optional[Sequence[Union[Mapping[str, Any], Message]]] = None,
     *,
     tools: Optional[Sequence[Union[Mapping[str, Any], Tool, Callable]]] = None,
+    tool_choice: Optional[Union[ToolChoice, Mapping[str, Any]]] = None,
     stream: Literal[False] = False,
     think: Optional[Union[bool, Literal['low', 'medium', 'high']]] = None,
     logprobs: Optional[bool] = None,
@@ -960,6 +967,7 @@ async def chat(
     messages: Optional[Sequence[Union[Mapping[str, Any], Message]]] = None,
     *,
     tools: Optional[Sequence[Union[Mapping[str, Any], Tool, Callable]]] = None,
+    tool_choice: Optional[Union[ToolChoice, Mapping[str, Any]]] = None,
     stream: Literal[True] = True,
     think: Optional[Union[bool, Literal['low', 'medium', 'high']]] = None,
     logprobs: Optional[bool] = None,
@@ -975,6 +983,7 @@ async def chat(
     messages: Optional[Sequence[Union[Mapping[str, Any], Message]]] = None,
     *,
     tools: Optional[Sequence[Union[Mapping[str, Any], Tool, Callable]]] = None,
+    tool_choice: Optional[Union[ToolChoice, Mapping[str, Any]]] = None,
     stream: bool = False,
     think: Optional[Union[bool, Literal['low', 'medium', 'high']]] = None,
     logprobs: Optional[bool] = None,
@@ -1025,6 +1034,7 @@ def add_two_numbers(a: int, b: int) -> int:
         model=model,
         messages=list(_copy_messages(messages)),
         tools=list(_copy_tools(tools)),
+        tool_choice=tool_choice,
         stream=stream,
         think=think,
         logprobs=logprobs,
diff --git a/ollama/_types.py b/ollama/_types.py
index 96529d63..690be548 100644
--- a/ollama/_types.py
+++ b/ollama/_types.py
@@ -384,6 +384,28 @@ class Property(SubscriptableBaseModel):
   function: Optional[Function] = None
 
 
+
+class ToolChoiceFunction(SubscriptableBaseModel):
+  """
+  Forces the model to call a specific tool by name.
+
+  Example::
+
+    tool_choice=ToolChoiceFunction(function=ToolChoiceFunction.Function(name='get_weather'))
+  """
+
+  class Function(SubscriptableBaseModel):
+    name: str
+    'Name of the function to call.'
+
+  type: Literal['function'] = 'function'
+  function: Function
+  'The function to force the model to call.'
+
+
+ToolChoice = Union[Literal['none', 'auto', 'required'], ToolChoiceFunction]
+
+
 class ChatRequest(BaseGenerateRequest):
   @model_serializer(mode='wrap')
   def serialize_model(self, nxt):
@@ -400,6 +422,9 @@ def serialize_model(self, nxt):
   tools: Optional[Sequence[Tool]] = None
   'Tools to use for the chat.'
 
+  tool_choice: Optional[ToolChoice] = None
+  """Controls which tool the model calls: 'none', 'auto', 'required', or ToolChoiceFunction."""
+
   think: Optional[Union[bool, Literal['low', 'medium', 'high']]] = None
   'Enable thinking mode (for thinking models).'