1 | Dog | | Walt's dog. |
| Faulkner | | One of the railroad engineers. |
| Mike | Niall | An old rancher. |
| Pat | | Bar owner. |
| Cady | | Walt's daughter. |
| Victoria | Moretti | Absaroka County undersheriff. Aka: Vic. |
| Mary | Barsad | Primary suspect in Wade Barsad's murder. |
| Sandy | Sandberg | Campbell County sheriff. |
| Walter | Longmire | Absaroka County sheriff. Aka: Walt. |
| Kyle | Straub | Prosecuting attorney. |
| Cato | | Cheyenne elder. |
| Lucian | Connally | Former sheriff of Absaroka County. |
| Ernie | Brown | Editor in chief of the Durant Courant. |
| Ruby | | Absaroka County dispatcher. |
| Henry | Standing Bear | Walt's friend. |
| Dorothy | Caldwell | Busy Bee Café owner. |
| Bill | Nolan | Walt's former schoolmate. |
| Wade | Barsad | Mary's husband. |
| Juana | Balcarcel | Bartender. |
| Benjamin | | Juana's son. |
| Eric | Boss | Runs Boss Insurance. |
2 | Cliff | Cly | Worked for Wade. |
| Hershel | Vanskike | Worked for the Barsads. |
| T. J. | Sherwin | Head of the DCI investigators. |
3 | Black Diamond | Wahoo Sue | Mary Barsad's horse. |
| Michael | | Vic's brother. |
| Alphonse | | Vic's uncle. |
| Isaac | Bloomfield | Town doctor. |
4 | Willis | Barnecke | One of Wade Barsad's former names. Aka: Canary. |
| Joey | Venuto | Barnecke's boss. Aka: Suits. |
| Wallace | Balentine | One of Wade Barsad's former names. |
| | Saizarbitoria | One of Walt's deputies. |
| Double | Tough | One of Walt's deputies. |
| Chuck | Frymire | One of Walt's deputies. |
| | Basquo | One of Walt's deputies. |
| | Sancho | One of Walt's deputies. |
| Marie | | Sancho's wife. |
| Joe | Meyer | Attorney General. |
| Mary | | Joe's wife. |
5 | Steve | Lawrence | Radio DJ. |
| Rose | | Cly's girl. |
| Wiggle | | Rose's unborn child's name. |
6 | Sidney | | Owner of the Powder River Red Crown Service Station. |
| Wendell | Barnecke | Wade's brother. |
| Sheldon | Siegel | Wendell's lawyer. |
| Larry | Brannian | Auctioneer. |
7 | Virgil | White Buffalo | Former inmate. |
| Steve | Miller | The telephone man. |
| Jessie | | Steve Miller's daughter. |
| Rezdawg | | Henry Standing Bear's truck. |
8 | Martha | | Walt's late wife. |
| Tom | Groneberg | Walt's tenant. |
| Carter | | Tom Groneberg's son. |
| Jennifer | | Tom Groneberg's wife. |
| Thomas | Wolfe | American novelist. |
9 | Buster | | A black bear. |
| Gary | Hasbrouk | Henry's opponent. |
| D. J. | Sorenson | Cly's first opponent. |
| Ken | Colbo | Cly's second opponent. |
10 | John | Boertlein | One of the men from Chicago. |
| Bud | Ardary | One of the men from Chicago. |
| Janine | | Dr. Bloomfield's nurse. |
| Mari | Baroja | Lucian Connally's late ex-wife. |
| Lana | | Mari's granddaughter. |
11 | Jim | Rogers | Mechanic. |
12 | Dena | Many Camps | One of the Cheyenne people. |
13 | John J. | Audubon | American ornithologist, naturalist, and painter. |
Epi | Mike | Pilch | Veterinarian. |