| 2012 ISC WT Umpires | ||||
| Umpire | City and Province | |||
| Paul | Baier | Stratford, ON N5A 7G5 | ||
| Victor | Cena | Mason, MI 48854 | ||
| Mike | Clark | Saginaw, MI 48602 | ||
| Lou | Davis | Truro, NS B3N 3S6 | ||
| Jim | Fatrakis | Bay City, MI 48708 | ||
| Mark | Gough | Moncton, NB E1A 5J6 | ||
| Jay | Hart | Dunnville, ON N1A 1V9 | ||
| Ray | Inman | Grand Blanc, MI 48439 | ||
| Steve | Janke | Caledonia, MI 49316-7927 | ||
| Peter | Kluszczynski | Barrie, ON L4N 3K0 | ||
| Serge | Laflamme | Levis, PQ G6V 4J3 | ||
| Mark | Larson | Fenton, MI 48430 | ||
| Mark | Mac Farlane | Christchurch, NZ 8061 | ||
| Jay | McGivern | Bloomington, MN 55438 | ||
| Billy | Norton | Sault Ste Marie, MI 47983 | ||
| Mike | Orn | Barnum, MN 55707 | ||
| Ginger | Rendon | Pueblo, CO 81004 | ||
| Terry | Richter | Sherwood Park, AB T8H 2L4 | ||
| Mark | Rieber | Mankato, MN 56001 | ||
| Dave | Selden | Reese, MI 48757 | ||
| Brian | Sharples | Pickering, ON L1W 3B7 | ||
| Joe | Squires | Midland, MI 48640 | ||
| Paul | Squires | Rockford, MI 48341 | ||
| Larry | Tait | Holly, MI 48442 | ||
| Chris | Tehonica | Carthage, NY 13619 | ||
| Andy | Trent | Kokomo, IN 46902 | ||
| Tim | Whitelaw | Kitchener, ON N2A 2H9 | ||