diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/test_terraform_import.py b/tests/test_terraform_import.py
new file mode 100644
index 00000000..a99935d2
--- /dev/null
+++ b/tests/test_terraform_import.py
@@ -0,0 +1,20 @@
+"""Tests for Terraform resource name validation"""
+import sys, os, unittest
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "tools"))
+from terraform_import import validate_resource_name
+
+class TestValidateResourceName(unittest.TestCase):
+    def test_valid_standard(self):
+        for n in ["my_resource", "MyResource", "resource_1", "test"]:
+            v, m = validate_resource_name(n)
+            self.assertTrue(v, f"{n}: {m}")
+    def test_hyphen_rejected(self):
+        v, m = validate_resource_name("my-resource")
+        self.assertFalse(v); self.assertIn("hyphen", m.lower())
+    def test_empty_rejected(self):
+        v, m = validate_resource_name(""); self.assertFalse(v)
+    def test_invalid_chars(self):
+        for n in ["123abc", "my.resource", "my resource"]:
+            self.assertFalse(validate_resource_name(n)[0])
+if __name__ == "__main__":
+    unittest.main()
diff --git a/tools/terraform_import.py b/tools/terraform_import.py
index 9241ef31..1c1c88db 100644
--- a/tools/terraform_import.py
+++ b/tools/terraform_import.py
@@ -120,6 +120,23 @@ class ImportResult:
 # IMPORTER
 # ---------------------------------------------------------------------------
 
+
+import re
+
+def validate_resource_name(name):
+    """Validate a Terraform resource name. Returns (is_valid, error_message).
+    Resource names must match: [a-zA-Z_][a-zA-Z0-9_]*.
+    Hyphens are not allowed in Terraform resource names.
+    """
+    if not name:
+        return False, "Resource name cannot be empty"
+    if "-" in name:
+        return False, f"Resource name '{name}' contains hyphens, which can corrupt Terraform state"
+    if not re.match(r"^[a-zA-Z_][a-zA-Z0-9_]*$", name):
+        return False, f"Resource name '{name}' is not a valid Terraform identifier"
+    return True, ""
+
+
 class TerraformImporter:
     def __init__(self, state_dir: str = ".", terraform_binary: str = "terraform"):
         self.state_dir = Path(state_dir)