diff --git a/doc/changes/unreleased.md b/doc/changes/unreleased.md
index b3c34b63f..1a6e744a5 100644
--- a/doc/changes/unreleased.md
+++ b/doc/changes/unreleased.md
@@ -7,6 +7,7 @@
 * #691: Started customization of PTB workflows by defining the YML schema
 * #712: Added basic logging to workflow processing
 * #714: Added logic to modify a workflow using the .workflow-patcher.yml
+* #717: Restricted workflow names in .workflow-patcher.yml to template workflow names
 
 ## Documentation
 
diff --git a/exasol/toolbox/util/workflows/patch_workflow.py b/exasol/toolbox/util/workflows/patch_workflow.py
index 180ab4274..330eb2059 100644
--- a/exasol/toolbox/util/workflows/patch_workflow.py
+++ b/exasol/toolbox/util/workflows/patch_workflow.py
@@ -7,6 +7,7 @@
 )
 
 from pydantic import (
+    AfterValidator,
     BaseModel,
     ConfigDict,
     Field,
@@ -16,6 +17,7 @@
 
 from exasol.toolbox.util.workflows.exceptions import InvalidWorkflowPatcherYamlError
 from exasol.toolbox.util.workflows.render_yaml import YamlRenderer
+from exasol.toolbox.util.workflows.templates import WORKFLOW_TEMPLATE_OPTIONS
 
 
 class ActionType(str, Enum):
@@ -64,6 +66,17 @@ class StepCustomization(BaseModel):
     content: list[StepContent]
 
 
+def validate_workflow_name(workflow_name: str) -> str:
+    if workflow_name not in WORKFLOW_TEMPLATE_OPTIONS.keys():
+        raise ValueError(
+            f"Invalid workflow: {workflow_name}. Must be one of {WORKFLOW_TEMPLATE_OPTIONS.keys()}"
+        )
+    return workflow_name
+
+
+WorkflowName = Annotated[str, AfterValidator(validate_workflow_name)]
+
+
 class Workflow(BaseModel):
     """
     The :class:`Workflow` is used to specify which workflow should be modified.
@@ -73,7 +86,7 @@ class Workflow(BaseModel):
           should be modified.
     """
 
-    name: str
+    name: WorkflowName
     remove_jobs: list[str] = Field(default_factory=list)
     step_customizations: list[StepCustomization] = Field(default_factory=list)
 
diff --git a/exasol/toolbox/util/workflows/templates.py b/exasol/toolbox/util/workflows/templates.py
new file mode 100644
index 000000000..ef8fef371
--- /dev/null
+++ b/exasol/toolbox/util/workflows/templates.py
@@ -0,0 +1,22 @@
+from collections.abc import Mapping
+from pathlib import Path
+
+import importlib_resources as resources
+
+WORKFLOW_TEMPLATES_DIRECTORY = "exasol.toolbox.templates.github.workflows"
+
+
+def get_workflow_templates() -> Mapping[str, Path]:
+    """
+    Returns a mapping for workflow templates, where the keys are filenames without the
+    '.yml' extension and the values are the filepaths.
+    """
+    package_resources = resources.files(WORKFLOW_TEMPLATES_DIRECTORY)
+    return {
+        workflow_path.name.removesuffix(".yml"): Path(str(workflow_path))
+        for workflow_path in package_resources.iterdir()
+        if workflow_path.is_file() and workflow_path.name.endswith(".yml")
+    }
+
+
+WORKFLOW_TEMPLATE_OPTIONS = get_workflow_templates()
diff --git a/test/unit/util/workflows/conftest.py b/test/unit/util/workflows/conftest.py
index f2ad2a416..217ba009b 100644
--- a/test/unit/util/workflows/conftest.py
+++ b/test/unit/util/workflows/conftest.py
@@ -12,13 +12,13 @@
 class ExamplePatcherYaml:
     remove_jobs = """
         workflows:
-        - name: "checks.yml"
+        - name: "checks"
           remove_jobs:
             - build-documentation-and-check-links
         """
     step_customization = """
         workflows:
-        - name: "checks.yml"
+        - name: "checks"
           step_customizations:
             - action: {action}
               job: run-unit-tests
diff --git a/test/unit/util/workflows/patch_workflow_test.py b/test/unit/util/workflows/patch_workflow_test.py
index a3618b792..35ff3c82d 100644
--- a/test/unit/util/workflows/patch_workflow_test.py
+++ b/test/unit/util/workflows/patch_workflow_test.py
@@ -48,16 +48,16 @@ def test_extract_by_workflow_works_as_expected(
     ):
         content = f"""
         {example_patcher_yaml.remove_jobs}
-        - name: "pr-merge.yml"
+        - name: "pr-merge"
           remove_jobs:
            - publish-docs
         """
         content = cleandoc(content)
         workflow_patcher_yaml.write_text(content)
 
-        result = workflow_patcher.extract_by_workflow("pr-merge.yml")
+        result = workflow_patcher.extract_by_workflow("pr-merge")
         assert result == CommentedMap(
-            {"name": "pr-merge.yml", "remove_jobs": ["publish-docs"]}
+            {"name": "pr-merge", "remove_jobs": ["publish-docs"]}
         )
 
     @staticmethod
@@ -101,3 +101,30 @@ def test_raises_error_for_unknown_action(
 
         underlying_error = ex.value.__cause__
         assert isinstance(underlying_error, ValidationError)
+        assert "Input should be 'INSERT_AFTER' or 'REPLACE'" in str(underlying_error)
+
+
+class TestWorkflow:
+    @staticmethod
+    def test_raises_error_for_unknown_workflow_name(
+        workflow_patcher_yaml, workflow_patcher
+    ):
+        content = """
+        workflows:
+        - name: "unknown-workflow"
+          remove_jobs:
+            - build-documentation-and-check-links
+        """
+        workflow_patcher_yaml.write_text(cleandoc(content))
+
+        with pytest.raises(
+            InvalidWorkflowPatcherYamlError,
+            match="is malformed; it failed Pydantic validation",
+        ) as ex:
+            workflow_patcher.content
+
+        underlying_error = ex.value.__cause__
+        assert isinstance(underlying_error, ValidationError)
+        assert "Invalid workflow: unknown-workflow. Must be one of dict_keys([" in str(
+            underlying_error
+        )
diff --git a/test/unit/util/workflows/process_template_test.py b/test/unit/util/workflows/process_template_test.py
index 76f851add..96780169a 100644
--- a/test/unit/util/workflows/process_template_test.py
+++ b/test/unit/util/workflows/process_template_test.py
@@ -47,7 +47,7 @@
 
 @pytest.fixture
 def workflow_name():
-    return "checks.yml"
+    return "checks"
 
 
 @pytest.fixture
diff --git a/test/unit/util/workflows/templates_test.py b/test/unit/util/workflows/templates_test.py
new file mode 100644
index 000000000..9f19da78b
--- /dev/null
+++ b/test/unit/util/workflows/templates_test.py
@@ -0,0 +1,31 @@
+from exasol.toolbox.util.workflows.templates import get_workflow_templates
+from noxconfig import PROJECT_CONFIG
+
+
+def test_get_workflow_templates():
+    result = get_workflow_templates()
+
+    assert result.keys() == {
+        "build-and-publish",
+        "cd",
+        "check-release-tag",
+        "checks",
+        "ci",
+        "gh-pages",
+        "matrix-all",
+        "matrix-exasol",
+        "matrix-python",
+        "merge-gate",
+        "pr-merge",
+        "report",
+        "slow-checks",
+    }
+    # check only one path, as all formatted the same by convention
+    assert (
+        result["build-and-publish"]
+        == PROJECT_CONFIG.source_code_path
+        / "templates"
+        / "github"
+        / "workflows"
+        / "build-and-publish.yml"
+    )
diff --git a/test/unit/util/workflows/workflow_test.py b/test/unit/util/workflows/workflow_test.py
index 69d9e0d49..c12f7ab7e 100644
--- a/test/unit/util/workflows/workflow_test.py
+++ b/test/unit/util/workflows/workflow_test.py
@@ -8,15 +8,14 @@
     YamlParsingError,
 )
 from exasol.toolbox.util.workflows.process_template import WorkflowRenderer
+from exasol.toolbox.util.workflows.templates import WORKFLOW_TEMPLATE_OPTIONS
 from exasol.toolbox.util.workflows.workflow import Workflow
 from noxconfig import PROJECT_CONFIG
 
-TEMPLATE_DIR = PROJECT_CONFIG.source_code_path / "templates" / "github" / "workflows"
-
 
 class TestWorkflow:
     @staticmethod
-    @pytest.mark.parametrize("template_path", list(TEMPLATE_DIR.glob("*.yml")))
+    @pytest.mark.parametrize("template_path", WORKFLOW_TEMPLATE_OPTIONS.values())
     def test_works_for_all_templates(template_path):
         Workflow.load_from_template(
             file_path=template_path,