| Ray |
Bartlett | Restaurant manager. |
| Wesley |
Bayles | Sheriff of Big Horn County, Montana. Aka: Wes. |
| Wilf |
Carter | Canadian singer. Aka: Montana Slim. |
| Jim |
Chee | Fictional character. |
| Arthur |
Conan Doyle | British writer and physician. |
| Brian |
Connally | Ambitious deputy serving as a foil to Walt Longmire. Aka: Turk. |
| Lucian |
Connally | Former Absaroka County sheriff and Walt Longmire's predecessor. |
| Ernie |
Decker | Character illustrating domestic struggles and personal battles. |
| Esther |
Decker | Ernie Decker's wife. |
| Lou |
Diamond Phillips | American actor and director. |
| Juliet |
Durant | Major Durant's wife. |
| Verling |
Durant | Major who claimed the townsite of Durant. |
| Clint |
Eastwood | American actor, musician, and filmmaker. |
| Bud |
Elkins | Former mayor. Aka: Buddy. |
| Tony |
Hillerman | American author of detective novels and nonfiction works. |
| Craig |
Johnson | American author who writes mystery novels. |
| Judy |
Johnson | Craig Johnson's wife. |
| Ken |
Kesey | American novelist and essayist. |
| Louis |
L'Amour | American novelist and short story writer. |
| Michael |
Lenz | Ernie Decker's friend. |
| Lonnie |
Little Bird | Northern Cheyenne tribal elder, council member, and later chief. |
| Cady |
Longmire | Daughter of Sheriff Walt Longmire. |
| Martha |
Longmire | Walt Longmire's wife. |
| Walt |
Longmire | Sheriff of Absaroka County, Wyoming. |
| Genevieve |
McNeil | Bud Elkins's acquaintance. |
| Bill |
Miller | Genevieve McNeil's ex-husband. |
| George |
Miller | Bill Miller's brother. |
| Victoria |
Moretti | Primary deputy and second-in-command. Aka: Vic. |
| Travis |
Mowry | A thief. |
| Mrs. |
Percy | Genevieve McNeil's acquaintance. |
| Santiago |
Saizarbitoria | Basque deputy in the Absaroka County Sheriff's Office. Aka: Sancho. |
| Will |
Sampson | Muscogee Nation painter, actor, and rodeo performer. |
| Gene |
Sherman | Triggers memories of Walt Longmire's late wife. |
| Henry |
Standing Bear | Walt Longmire's loyal Cheyenne best friend. |
| Elaine |
Whelks | Methodist preacher in Absaroka County, Wyoming. |
| Dog |
| Walt Longmire's loyal canine companion. |
| Dorothy |
| Chief cook and bottle washer at the Busy Bee Cafe. |
| Douglas |
| Gene Sherman's acquaintance. |
| Jason |
| Young boy acquainted with Elaine Whelks. |
| John |
| Walt Longmire's friend. |
| Liz |
| Elaine Whelks's acquaintance. |
| Wanda |
| A waitress. |
| Yvonne |
| Ernie Decker's sister. |
