diff --git a/services/actions/job_parser.go b/services/actions/job_parser.go
new file mode 100644
index 0000000000..f55edcddad
--- /dev/null
+++ b/services/actions/job_parser.go
@@ -0,0 +1,31 @@
+// Copyright 2025 The Forgejo Authors. All rights reserved.
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package actions
+
+import (
+	"fmt"
+
+	"github.com/nektos/act/pkg/jobparser"
+)
+
+func jobParser(workflow []byte, options ...jobparser.ParseOption) ([]*jobparser.SingleWorkflow, error) {
+	singleWorkflows, err := jobparser.Parse(workflow, options...)
+	if err != nil {
+		return nil, err
+	}
+	nameToSingleWorkflows := make(map[string][]*jobparser.SingleWorkflow, len(singleWorkflows))
+	duplicates := make(map[string]int, len(singleWorkflows))
+	for _, singleWorkflow := range singleWorkflows {
+		id, job := singleWorkflow.Job()
+		nameToSingleWorkflows[job.Name] = append(nameToSingleWorkflows[job.Name], singleWorkflow)
+		if len(nameToSingleWorkflows[job.Name]) > 1 {
+			duplicates[job.Name]++
+			job.Name = fmt.Sprintf("%s-%d", job.Name, duplicates[job.Name])
+			if err := singleWorkflow.SetJob(id, job); err != nil {
+				return nil, err
+			}
+		}
+	}
+	return singleWorkflows, nil
+}
diff --git a/services/actions/job_parser_test.go b/services/actions/job_parser_test.go
new file mode 100644
index 0000000000..9c1361d74e
--- /dev/null
+++ b/services/actions/job_parser_test.go
@@ -0,0 +1,212 @@
+// Copyright 2025 The Forgejo Authors. All rights reserved.
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package actions
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestServiceActions_jobParser(t *testing.T) {
+	for _, testCase := range []struct {
+		name            string
+		workflow        string
+		singleWorkflows []string
+	}{
+		{
+			name: "OneJobNoDuplicate",
+			workflow: `
+jobs:
+  job1:
+    runs-on: docker
+    steps:
+      - run: echo OK
+`,
+			singleWorkflows: []string{
+				`jobs:
+    job1:
+        name: job1
+        runs-on: docker
+        steps:
+            - run: echo OK
+`,
+			},
+		},
+		{
+			name: "MatrixTwoJobsWithSameJobName",
+			workflow: `
+name: test
+jobs:
+  job1:
+    name: shadowdefaultmatrixgeneratednames
+    strategy:
+      matrix:
+        version: [1.17, 1.19]
+    runs-on: docker
+    steps:
+      - run: echo OK
+`,
+			singleWorkflows: []string{
+				`name: test
+jobs:
+    job1:
+        name: shadowdefaultmatrixgeneratednames
+        runs-on: docker
+        steps:
+            - run: echo OK
+        strategy:
+            matrix:
+                version:
+                    - 1.17
+`,
+				`name: test
+jobs:
+    job1:
+        name: shadowdefaultmatrixgeneratednames-1
+        runs-on: docker
+        steps:
+            - run: echo OK
+        strategy:
+            matrix:
+                version:
+                    - 1.19
+`,
+			},
+		},
+		{
+			name: "MatrixTwoJobsWithMatrixGeneratedNames",
+			workflow: `
+name: test
+jobs:
+  job1:
+    strategy:
+      matrix:
+        version: [1.17, 1.19]
+    runs-on: docker
+    steps:
+      - run: echo OK
+`,
+			singleWorkflows: []string{
+				`name: test
+jobs:
+    job1:
+        name: job1 (1.17)
+        runs-on: docker
+        steps:
+            - run: echo OK
+        strategy:
+            matrix:
+                version:
+                    - 1.17
+`,
+				`name: test
+jobs:
+    job1:
+        name: job1 (1.19)
+        runs-on: docker
+        steps:
+            - run: echo OK
+        strategy:
+            matrix:
+                version:
+                    - 1.19
+`,
+			},
+		},
+		{
+			name: "MatrixTwoJobsWithDistinctInterpolatedNames",
+			workflow: `
+name: test
+jobs:
+  job1:
+    name: myname-${{ matrix.version }}
+    strategy:
+      matrix:
+        version: [1.17, 1.19]
+    runs-on: docker
+    steps:
+      - run: echo OK
+`,
+			singleWorkflows: []string{
+				`name: test
+jobs:
+    job1:
+        name: myname-1.17
+        runs-on: docker
+        steps:
+            - run: echo OK
+        strategy:
+            matrix:
+                version:
+                    - 1.17
+`,
+				`name: test
+jobs:
+    job1:
+        name: myname-1.19
+        runs-on: docker
+        steps:
+            - run: echo OK
+        strategy:
+            matrix:
+                version:
+                    - 1.19
+`,
+			},
+		},
+		{
+			name: "MatrixTwoJobsWithIdenticalInterpolatedNames",
+			workflow: `
+name: test
+jobs:
+  job1:
+    name: myname-${{ matrix.typo }}
+    strategy:
+      matrix:
+        version: [1.17, 1.19]
+    runs-on: docker
+    steps:
+      - run: echo OK
+`,
+			singleWorkflows: []string{
+				`name: test
+jobs:
+    job1:
+        name: myname-
+        runs-on: docker
+        steps:
+            - run: echo OK
+        strategy:
+            matrix:
+                version:
+                    - 1.17
+`,
+				`name: test
+jobs:
+    job1:
+        name: myname--1
+        runs-on: docker
+        steps:
+            - run: echo OK
+        strategy:
+            matrix:
+                version:
+                    - 1.19
+`,
+			},
+		},
+	} {
+		t.Run(testCase.name, func(t *testing.T) {
+			sw, err := jobParser([]byte(testCase.workflow))
+			require.NoError(t, err)
+			for i, sw := range sw {
+				actual, err := sw.Marshal()
+				require.NoError(t, err)
+				assert.Equal(t, testCase.singleWorkflows[i], string(actual))
+			}
+		})
+	}
+}
diff --git a/services/actions/notifier_helper.go b/services/actions/notifier_helper.go
index 9de0b75ac7..4ec077115b 100644
--- a/services/actions/notifier_helper.go
+++ b/services/actions/notifier_helper.go
@@ -364,7 +364,7 @@ func handleWorkflows(
 			continue
 		}
 
-		jobs, err := jobparser.Parse(dwf.Content, jobparser.WithVars(vars))
+		jobs, err := jobParser(dwf.Content, jobparser.WithVars(vars))
 		if err != nil {
 			log.Error("jobparser.Parse: %v", err)
 			continue
diff --git a/services/actions/schedule_tasks.go b/services/actions/schedule_tasks.go
index f66a6ca092..c0bb4f3c64 100644
--- a/services/actions/schedule_tasks.go
+++ b/services/actions/schedule_tasks.go
@@ -139,7 +139,7 @@ func CreateScheduleTask(ctx context.Context, cron *actions_model.ActionSchedule)
 	}
 
 	// Parse the workflow specification from the cron schedule
-	workflows, err := jobparser.Parse(cron.Content, jobparser.WithVars(vars))
+	workflows, err := jobParser(cron.Content, jobparser.WithVars(vars))
 	if err != nil {
 		return err
 	}
diff --git a/services/actions/workflows.go b/services/actions/workflows.go
index 7ec7c3abed..ca9c034b87 100644
--- a/services/actions/workflows.go
+++ b/services/actions/workflows.go
@@ -132,7 +132,7 @@ func (entry *Workflow) Dispatch(ctx context.Context, inputGetter InputValueGette
 		return nil, nil, err
 	}
 
-	jobs, err := jobparser.Parse(content, jobparser.WithVars(vars))
+	jobs, err := jobParser(content, jobparser.WithVars(vars))
 	if err != nil {
 		return nil, nil, err
 	}