diff --git a/src/pytfe/models/project.py b/src/pytfe/models/project.py
index d1aa67b..c98af8e 100644
--- a/src/pytfe/models/project.py
+++ b/src/pytfe/models/project.py
@@ -48,6 +48,8 @@ class ProjectListOptions(BaseModel):
 
     # Optional: String used to filter results by complete project name
     name: str | None = None
+    # Optional: Tags used to filter results by key=value pairs
+    tags: dict[str, str] | None = None
     # Optional: Query string to search projects by names
     query: str | None = None
     # Optional: Include related resources
diff --git a/src/pytfe/resources/projects.py b/src/pytfe/resources/projects.py
index ac97317..f075698 100644
--- a/src/pytfe/resources/projects.py
+++ b/src/pytfe/resources/projects.py
@@ -160,6 +160,10 @@ def list(
                 params["q"] = options.query
             if options.name:
                 params["filter[names]"] = options.name
+            if options.tags:
+                for i, (tag_name, tag_value) in enumerate(options.tags.items()):
+                    params[f"filter[tagged][{i}][key]"] = _safe_str(tag_name)
+                    params[f"filter[tagged][{i}][value]"] = _safe_str(tag_value)
             if options.page_size:
                 params["page[size]"] = options.page_size
 
diff --git a/tests/units/test_project.py b/tests/units/test_project.py
index 2f4a332..18e083c 100644
--- a/tests/units/test_project.py
+++ b/tests/units/test_project.py
@@ -10,6 +10,7 @@
     Project,
     ProjectAddTagBindingsOptions,
     ProjectCreateOptions,
+    ProjectListOptions,
     ProjectUpdateOptions,
     TagBinding,
 )
@@ -109,6 +110,51 @@ def test_list_projects_success(self):
         expected_path = f"/api/v2/organizations/{organization}/projects"
         self.projects_service._list.assert_called_once_with(expected_path)
 
+    def test_list_projects_by_tags_query_params_serialized_success(self):
+        """Test successful serialization of project list tag filter into query parameters."""
+        organization = "test-org"
+        expected_path = f"/api/v2/organizations/{organization}/projects"
+
+        # Mock the _list method so we can introspect the query parameters
+        self.projects_service._list = Mock(return_value=[])
+
+        # Call the method under test
+        list(
+            self.projects_service.list(
+                organization, options=ProjectListOptions(tags={"department": "five"})
+            )
+        )
+
+        self.projects_service._list.assert_called_once_with(
+            expected_path,
+            params={
+                "filter[tagged][0][key]": "department",
+                "filter[tagged][0][value]": "five",
+            },
+        )
+
+    def test_list_projects_by_name_query_params_serialized_success(self):
+        """Test successful serialization of project list name filter into query parameters."""
+        organization = "test-org"
+        expected_path = f"/api/v2/organizations/{organization}/projects"
+
+        # Mock the _list method so we can introspect the query parameters
+        self.projects_service._list = Mock(return_value=[])
+
+        # Call the method under test
+        list(
+            self.projects_service.list(
+                organization, options=ProjectListOptions(name="prj-456")
+            )
+        )
+
+        self.projects_service._list.assert_called_once_with(
+            expected_path,
+            params={
+                "filter[names]": "prj-456",
+            },
+        )
+
     def test_create_project_success(self):
         """Test successful project creation"""
         organization = "test-org"