diff --git a/i18n_guardian/detectors/vue_i18n.py b/i18n_guardian/detectors/vue_i18n.py
new file mode 100644
index 0000000..08cba65
--- /dev/null
+++ b/i18n_guardian/detectors/vue_i18n.py
@@ -0,0 +1,70 @@
+"""Vue I18n detector."""
+
+import json
+from pathlib import Path
+from typing import Optional
+
+from i18n_guardian.detectors.base import Detector
+
+
+class VueI18nDetector(Detector):
+    """Detect Vue I18n library usage."""
+
+    @property
+    def name(self) -> str:
+        return "vue-i18n"
+
+    @property
+    def patterns(self) -> list:
+        return ["package.json", "vue.config.js", "vite.config.js"]
+
+    def detect(self, path: Path) -> Optional[str]:
+        """Check for Vue I18n usage."""
+        package_json = path / "package.json"
+        if package_json.exists():
+            try:
+                with open(package_json, "r", encoding="utf-8") as f:
+                    data = json.load(f)
+                    dependencies = data.get("dependencies", {})
+                    dev_dependencies = data.get("devDependencies", {})
+                    all_deps = {**dependencies, **dev_dependencies}
+                    if "vue-i18n" in all_deps:
+                        return self.name
+            except (json.JSONDecodeError, OSError):
+                pass
+
+        vue_config = path / "vue.config.js"
+        if vue_config.exists():
+            content = vue_config.read_text(encoding="utf-8")
+            if "vue-i18n" in content:
+                return self.name
+
+        vite_config = path / "vite.config.js"
+        if vite_config.exists():
+            content = vite_config.read_text(encoding="utf-8")
+            if "vue-i18n" in content:
+                return self.name
+
+        for vue_file in path.rglob("*.vue"):
+            try:
+                content = vue_file.read_text(encoding="utf-8")
+                if "$t(" in content or "$tc(" in content:
+                    return self.name
+            except OSError:
+                continue
+
+        return None
+
+    def get_i18n_functions(self) -> list:
+        """Get Vue I18n function names."""
+        return [
+            "$t",
+            "$tc",
+            "$d",
+            "$n",
+            "$te",
+            "t",
+            "tc",
+            "d",
+            "n",
+        ]