diff --git a/README.md b/README.md
index 8c4fc45..8c37f79 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,7 @@ Operation                   | Description
 --------------------------- | ---------------------------
   del_model <reg_ex>  | Deletes all models whose name contains the regular expression <reg_ex>.
   geo_name <name>     | Change the .geo's name to <name>.
+  rename_mode <new> <old> | Rename a model from <new> to <old>.
 
 Multiple operations can be specified and performed in the same run.
 
diff --git a/geo_edit.py b/geo_edit.py
index 7e0c40b..26143de 100755
--- a/geo_edit.py
+++ b/geo_edit.py
@@ -13,6 +13,7 @@ if len(sys.argv) < 4:
     print("Operations:")
     print("    del_model <reg_ex_filter>    Delete models with the name matching regular expression.")
     print("    geo_name <geo_name>          Rename the name of the .geo .")
+    print("    rename_model <old> <new>     Rename model <old> to <new>.")
     exit()
 
 fn_in = sys.argv[1]
@@ -26,6 +27,7 @@ geo = Geo()
 geo.loadFromFile(fh_in)
 fh_in.close()
 print("Done.")
+print()
 
 arg_i = 3
 while arg_i < len(sys.argv):
@@ -47,10 +49,24 @@ while arg_i < len(sys.argv):
         arg_i += 1
         print("Rename GEO from '%s' to '%s'" % (geo.header_modelheader_name.decode("utf-8"), name))
         geo.header_modelheader_name = bytes(name, "utf-8")
+    elif operation == "rename_model":
+        nameold = bytes(sys.argv[arg_i], "utf-8")
+        namenew = bytes(sys.argv[arg_i+1], "utf-8")
+        arg_i += 2
+        renamed = False
+        for m in geo.models:
+            if m.name == nameold:
+                m.name = namenew
+                print("Renamed model '%s' to '%s'" % (nameold.decode("utf-8"), namenew.decode("utf-8")))
+                renamed +=1
+                break
+        if renamed <= 0:
+            print("   **Warning!*** Rename failed, no model name matched '%s'." % (nameold.decode("utf-8"), ))
     else:
         print("Unknown operation: '%s'" % (operation, ))
         exit()
 
+print()
 print("Writing '%s'..." % (fn_out, ))
 fh_out = open(fn_out, "wb")
 geo.saveToFile(fh_out)