By Name
Updated December 2009
Updated December 2009
| A - B | C - D | E - G | H - K | L - M | N - P | Q - S | T - V | W - Z |
| Last Name | First Name | City | State | Country | Kennel Name |
Year joined |
| LaBombard | Terry | Roxboro | NC | Brimstone Mastiffs | 2003 | |
| LaBombard | Jodi | Roxboro | NC | Brimstone Mastiffs | 2003 | |
| Laidlaw | Sarah | Mesquite | NV | Ute Canyon Mastiffs | 2001 | |
| Lambden | Jennifer | Sinton | TX | Sunnydale Mastiffs | 2004 | |
| Landreth | Crystal | Pisgah Forest | NC | 2008 | ||
| Lange | Paula | Pine | AZ | High Country | 1990 | |
| Lange | John | Pine | AZ | High Country | 1990 | |
| Langley | Betty | Humboldt | TN | Forked Oaks | 2004 | |
| Lanz | Jann | Ukiah | CA | Goldleaf Mastiffs | 2004 | |
| Lapinski | Liz | Stacy | MN | 2003 | ||
| Lauritsen | Margo | Brentwood | CA | Lamars | 1992 | |
| Lauritsen | Eric V. | Brentwood | CA | Lamars | 1993 | |
| LeBeau | Leo | Clearwater | FL | 2001 | ||
| Leek, MD | James C. | Carmichael | CA | Highgate | 1988 | |
| Lenahan | Pamela | Liberty | NC | Justin Love | 1993 | |
| Leumer | Heather | West Seneca | NY | Excelsior Mastiffs | 2005 | |
| Levine, Ph.D. | Donald M. | New York | NY | 1991 | ||
| Linzy | Debbie | Carmi | IL | Dandylion Mastiffs | 1996 | |
| Little | Don | Summerville | SC | 2004 | ||
| Little | Sandy | Summerville | SC | 2004 | ||
| Livingston | Colette | Bradshear | TX | 1999 | ||
| Lockburner | Valorie | Ham Lake | MN | Nordik Rose | 2005 | |
| Loew | Eva | Hampton | CT | 1968 | ||
| Lofgren | Wendy | Conifer | CO | Eximius Mastiffs | 2003 | |
| Lovece | Constance | Edmeston | NY | MCF~Town & Country Mastiffs | 2008 | |
| Low | Shannon | Lindell Beach | BC | CANADA | Resolute Reg'd | 1994 |
| Ludwig | Kirsten I. | Ellsworth | WI | Nittany | 1993 | |
| Ludwig | Dennis A. | Ellsworth | WI | Nittany | 1993 | |
| Lupi | Steve | San Mateo | CA | Seville Mastiffs | 1994 | |
| Lyons | Diane | Northport | NY | Sladhaire Mastiffs | 2009 | |
| Mahoney | Jamie | Clearwater | FL | 2006 | ||
| Malkus | Christina | Magnolia | TX | 2005 | ||
| Manceau | Nanci | Loomis | CA | Kingmont Mastiffs | 1996 | |
| Mantilla | Birgit | Chicago | IL | 2002 | ||
| Margraf | F. Joseph | Fairbanks | AK | Medallion | 1990 | |
| Marquardt | Shirley | Quartz Hill | CA | Ironways | 2000 | |
| Marschak | Gail S. | Bristol | WI | Dream Weaver Mastiffs | 1993 | |
| Martin | Caren E. | Lowell | MI | 1995 | ||
| Martin | Steve | Bartlesville | OK | 2007 | ||
| Martine | Mandie | Manor | TX | 2006 | ||
| Matter | Marguerite | Charlottesville | VA | 2001 | ||
| Matthews | Laura | Santa Ynez | CA | Rocky River | 1994 | |
| May | Anna G. | Murrieta | CA | Triple T (TTT) | 1999 | |
| McAfee | Pamela | Granby | CT | 1996 | ||
| McArthur | Celeste | Seattle | WA | 1999 | ||
| McArthur | Steve | Seattle | WA | 1999 | ||
| McCarter | Molly | Monticello | IL | Black Magic | 2005 | |
| McDonald | Marilyn G | Sand Springs | OK | MGM Olde English | 1992 | |
| McFarland | Marissa Ann | Oil City | PA | 2007 | ||
| McFarlane | Kim Marie | Huntley | IL | Castle Keep Mastiffs | 2005 | |
| McGilvery | Anthony | Morgan Hill | CA | Talamasca Kennels | 1994 | |
| McGilvery | Mecherie | Morgan Hill | CA | Talamasca Mastiffs | 1997 | |
| McKemie | Jennifer | Lithia Springs | GA | Spirit Mastiffs | 2008 | |
| McKibbin | Debora | Sugarland | TX | 2006 | ||
| McKinney | Druanne | Yale | MI | Wuli Mastiffs | 2008 | |
| McLeod | Gary | Coopersburg | PA | 2007 | ||
| McMahon | Jill | Wake Forest | NC | Plantation | 2003 | |
| McNamee | Janice M. | Litchfield | OH | Windfall Mastiffs | 1992 | |
| McNamee | Chuck | Litchfield | OH | Windfall Mastiffs | 2003 | |
| McQueen | Susan E | Largo | FL | Dreaming of Tuscany | 2001 | |
| Mears | Suzie | Homestead | FL | 2000 | ||
| Mears | Larie | Homestead | FL | Celtic's Mastiffs | 2002 | |
| Meeks | Dee | Talala | OK | 2002 | ||
| Merritt | Steve Alvin | Coryton | TN | 2001 | ||
| Merritt | Tammi Marie | Coryton | TN | 2001 | ||
| Meyer | Kelly | Savannah | GA | Meyer's | 1984 | |
| Miller | Sharon | Westgate | IA | Shamill Mastiff | 2007 | |
| Miller | Eloise | Duncannon | PA | 1995 | ||
| Miller | Phyllis J. | La Jolla | CA | Seacoast | 1979 | |
| Mita | Theresa | Dover | PA | 2007 | ||
| Moar | Yvonne | Selah | WA | Manzana | 1986 | |
| Modica | Jennifer | Cape May Court House | NJ | Agincourt Kennel | 1990 | |
| Molisky | Harold | Granby | CT | Emerald Mastiffs | 2003 | |
| Molloy | Lauren | Zephyr | ONT | Canada | Banda | 2007 |
| Molloy | Bev | Zephyr | ONT | Canada | Banda (Reg) | 1983 |
| Moore | Gina | Front Royal | VA | Spicewood Kennels | 1998 | |
| Moore | Cheryl Merriman | Clackamas | OR | Blueprint Kennels | 2009 | |
| Moore | Thomas | Clackamas | OR | Blueprint Kennels | 2009 | |
| Moore | Dorothy D. (Dolly) | Huntsville | AL | Monastic Mastiffs | 2002 | |
| Morin | Mary | Port Orchard | WA | Glenwood Mastiffs | 1989 | |
| Morrell | Kimberly | Hampton Falls | NH | 2003 | ||
| Morris | Edna E. | Pittsburgh | PA | Kinmor | 1994 | |
| Morris | Allen | Roy | WA | Cedarhollow Mastiffs | 1997 | |
| Morris | Jamie | Roy | WA | Cedarhollow Mastiffs | 1997 | |
| Moss | Jane L. | Oakland | ME | 1990 | ||
| Mott | Judi L. | Yukon | OK | Landondale Mastiffs | 2001 | |
| Muir | Merilee | Sarasota | FL | Skyfield Farm | 2006 | |
| Mullins | Roxane | Jackson | OH | Mountain Top Mastiffs | 1997 | |
| Murphy | M. Margaret | Merritt Island | FL | Irish-Hacienda Mastiffs | 2001 | |
| Myroup | Lora | Hammond | IN | Silver Knight Mastiffs | 2009 |