diff --git a/tests/unit/test_validate_dotnet_migration_roadmap_v1.py b/tests/unit/test_validate_dotnet_migration_roadmap_v1.py
new file mode 100644
index 00000000..09bbe1e9
--- /dev/null
+++ b/tests/unit/test_validate_dotnet_migration_roadmap_v1.py
@@ -0,0 +1,39 @@
+from __future__ import annotations
+
+import json
+import subprocess
+import sys
+from pathlib import Path
+
+
+def test_validate_dotnet_migration_roadmap_passes() -> None:
+    root = Path(__file__).resolve().parents[2]
+    proc = subprocess.run(
+        [sys.executable, str(root / "tools" / "validate_dotnet_migration_roadmap_v1.py")],
+        cwd=root,
+        capture_output=True,
+        text=True,
+    )
+    assert proc.returncode == 0, proc.stdout + proc.stderr
+    payload = json.loads(proc.stdout)
+    assert payload["gate"] == "PASS"
+    assert payload["formula_id"] == "WBS_10_DOTNET_MIGRATION_ROADMAP_V1"
+
+
+def test_validate_dotnet_migration_roadmap_reports_missing_alignment() -> None:
+    root = Path(__file__).resolve().parents[2]
+    temp = root / "Temp" / "test_wbs_10_roadmap_bad.yaml"
+    temp.write_text(
+        "formula_id: WBS_10_DOTNET_MIGRATION_ROADMAP_V1\nroadmap:\n  phase_name: WBS-10 .NET 엔진 고도화\n  tracks: []\n",
+        encoding="utf-8",
+    )
+    proc = subprocess.run(
+        [sys.executable, str(root / "tools" / "validate_dotnet_migration_roadmap_v1.py"), "--roadmap", str(temp)],
+        cwd=root,
+        capture_output=True,
+        text=True,
+    )
+    assert proc.returncode != 0
+    payload = json.loads(proc.stdout)
+    assert payload["gate"] == "FAIL"
+    assert "alignment.spec_task_map" in payload["missing"]
diff --git a/tools/validate_dotnet_migration_roadmap_v1.py b/tools/validate_dotnet_migration_roadmap_v1.py
new file mode 100644
index 00000000..74afa71b
--- /dev/null
+++ b/tools/validate_dotnet_migration_roadmap_v1.py
@@ -0,0 +1,99 @@
+#!/usr/bin/env python3
+from __future__ import annotations
+
+import argparse
+import json
+from pathlib import Path
+from typing import Any
+
+import yaml
+
+
+REQUIRED_TASK_IDS = {
+    "WBS-10-A1", "WBS-10-A2", "WBS-10-A3",
+    "WBS-10-B1", "WBS-10-B2", "WBS-10-B3",
+    "WBS-10-C1", "WBS-10-C2", "WBS-10-C3",
+}
+
+
+def load_yaml(path: Path) -> dict[str, Any]:
+    if not path.exists():
+        raise FileNotFoundError(path)
+    return yaml.safe_load(path.read_text(encoding="utf-8"))
+
+
+def main(argv: list[str] | None = None) -> int:
+    parser = argparse.ArgumentParser(description="Validate WBS-10 dotnet migration roadmap")
+    parser.add_argument("--roadmap", default="docs/WBS_10_DOTNET_MIGRATION_ROADMAP.yaml")
+    args = parser.parse_args(argv)
+
+    roadmap_path = Path(args.roadmap).resolve()
+    payload: dict[str, Any] = {
+        "formula_id": "WBS_10_DOTNET_MIGRATION_ROADMAP_V1",
+        "gate": "FAIL",
+        "missing": [],
+        "evidence": {"roadmap": str(roadmap_path)},
+    }
+
+    try:
+        data = load_yaml(roadmap_path)
+    except FileNotFoundError:
+        payload["missing"].append("roadmap missing")
+        print(json.dumps(payload, ensure_ascii=False, indent=2))
+        return 1
+
+    if data.get("formula_id") != "WBS_10_DOTNET_MIGRATION_ROADMAP_V1":
+        payload["missing"].append("formula_id")
+
+    roadmap = data.get("roadmap") or {}
+    tracks = roadmap.get("tracks") or []
+    if roadmap.get("phase_name") != "WBS-10 .NET 엔진 고도화":
+        payload["missing"].append("roadmap.phase_name")
+    if roadmap.get("execution_order") is None:
+        payload["missing"].append("roadmap.execution_order")
+
+    task_ids: set[str] = set()
+    for track in tracks:
+        for task in track.get("tasks") or []:
+            task_ids.add(task.get("task_id", ""))
+            if not task.get("success_data_guide"):
+                payload["missing"].append(f"{task.get('task_id','<unknown>')}.success_data_guide")
+            if not task.get("depends_on") and task.get("task_id") not in {"WBS-10-A1", "WBS-10-B1", "WBS-10-C1"}:
+                payload["missing"].append(f"{task.get('task_id','<unknown>')}.depends_on")
+
+            guide = task.get("success_data_guide") or {}
+            if "expected_artifact_schema" not in guide:
+                payload["missing"].append(f"{task.get('task_id','<unknown>')}.expected_artifact_schema")
+            if "failure_conditions" not in guide:
+                payload["missing"].append(f"{task.get('task_id','<unknown>')}.failure_conditions")
+
+    missing_tasks = sorted(REQUIRED_TASK_IDS - task_ids)
+    for task_id in missing_tasks:
+        payload["missing"].append(f"{task_id} missing")
+
+    alignment = data.get("alignment") or {}
+    spec_task_map = alignment.get("spec_task_map") or {}
+    if not spec_task_map:
+        payload["missing"].append("alignment.spec_task_map")
+    else:
+        for spec_id in ("WBS-10.1", "WBS-10.2", "WBS-10.3", "WBS-10.4", "WBS-10.5", "WBS-10.6",
+                        "WBS-10.7", "WBS-10.8", "WBS-10.9", "WBS-10.10", "WBS-10.11", "WBS-10.12"):
+            if spec_id not in spec_task_map:
+                payload["missing"].append(f"alignment.{spec_id}")
+
+    payload["gate"] = "PASS" if not payload["missing"] else "FAIL"
+    payload["message"] = (
+        "WBS-10 dotnet migration roadmap validation passed."
+        if payload["gate"] == "PASS"
+        else "WBS-10 dotnet migration roadmap validation failed."
+    )
+
+    out_path = roadmap_path.parent.parent / "Temp" / "wbs_10_dotnet_migration_roadmap_v1.json"
+    out_path.parent.mkdir(parents=True, exist_ok=True)
+    out_path.write_text(json.dumps(payload, ensure_ascii=False, indent=2), encoding="utf-8")
+    print(json.dumps(payload, ensure_ascii=False, indent=2))
+    return 0 if payload["gate"] == "PASS" else 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())