diff --git a/cyclopts/bind.py b/cyclopts/bind.py
index 0e900bed..18a4648c 100644
--- a/cyclopts/bind.py
+++ b/cyclopts/bind.py
@@ -68,9 +68,21 @@ def parameter2cli(f: Callable) -> Dict[inspect.Parameter, List[str]]:
     p2c = {}
 
     for cli, tup in c2p.items():
-        parameter = tup[0]
-        p2c.setdefault(parameter, [])
-        p2c[parameter].append(cli)
+        iparam = tup[0]
+        p2c.setdefault(iparam, [])
+        p2c[iparam].append(cli)
+
+    signature = inspect.signature(f)
+    for iparam in signature.parameters.values():
+        annotation = str if iparam.annotation is iparam.empty else iparam.annotation
+        _, cparam = get_hint_parameter(annotation)
+
+        if not cparam.parse:
+            continue
+
+        # POSITIONAL_OR_KEYWORD and KEYWORD_ONLY already handled in cli2parameter
+        if iparam.kind in (iparam.POSITIONAL_ONLY, iparam.VAR_KEYWORD, iparam.VAR_POSITIONAL):
+            p2c[iparam] = get_names(iparam)
 
     return p2c
 
diff --git a/tests/test_parameter2cli.py b/tests/test_parameter2cli.py
new file mode 100644
index 00000000..9637657d
--- /dev/null
+++ b/tests/test_parameter2cli.py
@@ -0,0 +1,51 @@
+import inspect
+
+from typing_extensions import Annotated
+
+from cyclopts.bind import parameter2cli
+from cyclopts.parameter import Parameter
+
+
+def test_parameter2cli_positional_or_keyword():
+    def foo(a: Annotated[int, Parameter(negative=())]):
+        pass
+
+    a_iparam = list(inspect.signature(foo).parameters.values())[0]
+    actual = parameter2cli(foo)
+    assert actual == {a_iparam: ["--a"]}
+
+
+def test_parameter2cli_positional_only():
+    def foo(a: Annotated[int, Parameter(negative=())], /):
+        pass
+
+    a_iparam = list(inspect.signature(foo).parameters.values())[0]
+    actual = parameter2cli(foo)
+    assert actual == {a_iparam: ["A"]}
+
+
+def test_parameter2cli_keyword_only():
+    def foo(*, a: Annotated[int, Parameter(negative=())]):
+        pass
+
+    a_iparam = list(inspect.signature(foo).parameters.values())[0]
+    actual = parameter2cli(foo)
+    assert actual == {a_iparam: ["--a"]}
+
+
+def test_parameter2cli_var_keyword():
+    def foo(**a: Annotated[int, Parameter(negative=())]):
+        pass
+
+    a_iparam = list(inspect.signature(foo).parameters.values())[0]
+    actual = parameter2cli(foo)
+    assert actual == {a_iparam: ["--a"]}
+
+
+def test_parameter2cli_var_positional():
+    def foo(*a: Annotated[int, Parameter(negative=())]):
+        pass
+
+    a_iparam = list(inspect.signature(foo).parameters.values())[0]
+    actual = parameter2cli(foo)
+    assert actual == {a_iparam: ["A"]}