•
Michael Nouri as Bob Schwartz (seasons 1–4), the CEO at the financial firm Schwartz & Meyer, where Beth Dutton is a partner. • Atticus Todd as Ben Waters (seasons 1–3), a
tribal police officer. •
Rudy Ramos as Felix Long (season 1; guest seasons 2, 4–5), Monica's grandfather, and Tate's great-grandfather. • Tokala Black Elk as Sam Stands Alone (season 1), a friend of the Long family. • Luke Peckinpah as Fred Meyers (season 1), a ranch hand at Yellowstone. •
Walter C. Taylor III as Emmett Walsh (seasons 1, 5; guest seasons 3–4), an experienced elderly rancher and the chairman of the
Stock Growers Association. • David Cleveland Brown as Jason (seasons 1–2), Beth Dutton's assistant. •
Timothy Carhart as Mike Stewart (seasons 1, 3; guest season 2), the former attorney general for Montana. •
Fredric Lehne as Carl Reynolds (season 1), a close friend of John Dutton. •
Robert Mirabal as Principal Littlefield (season 1), a tribal school principal at Heartsong Middle School. •
Heather Hemmens as Melody Prescott (season 1), Dan Jenkins's real estate assistant. • Katherine Cunningham as Christina (seasons 1–2, 4; guest season 5), Jamie Dutton's assistant during his political campaign for attorney general who later gives birth to his son. •
Michaela Conlin as Sarah Nguyen (season 1; guest season 2), an investigative reporter drawn to John Dutton and his family. •
Hugh Dillon as Sheriff Donnie Haskell (seasons 2, 4; guest seasons 1, 3) the Sheriff of
Park County, Montana. • Jake Ream as Jake (seasons 2–5; guest season 1), a
bespectacled ranch hand at Yellowstone. •
Tanaya Beatty as Avery (seasons 2, 4; guest season 1), a former stripper recruited by Rip as a ranch hand at Yellowstone. •
Steven Williams as "Cowboy" (season 2), a veteran cowboy whose real name is unknown. •
Neal McDonough as Malcolm Beck (season 2), a rival businessman and nemesis to John Dutton. •
Terry Serpico as Teal Beck (season 2), Malcolm's brother and business partner. •
Kelly Rohrbach as Cassidy Reid (season 2), a
prosecutor, and former
rodeo queen. •
Martin Sensmeier as Martin (season 2), Monica's
physical therapist. Sensmeier also portrays Sam in
1883. •
James Jordan as Steve Hendon (seasons 2–4; guest season 5), a livestock agent who works with Kayce. Jordan also portrays Cookie in
1883. •
Lane Garrison as Ray (season 2), a
meth dealer and old friend of Jimmy. •
Ryan Dorsey as Blake (season 2), a meth dealer who works with Ray. • Gabriel "Gator" Guilbeau as Gator (seasons 2, 4–5; guest season 3), the personal chef for the Dutton family. Guilbeau, a real-life chef specializing in
Cajun cuisine, is also the
craft services manager and head chef for the production of
Yellowstone. •
Wolé Parks as Torry (season 2), the head of security for Dan Jenkins. • Ethan Lee as Ethan (seasons 3–5), a newly hired ranch hand at Yellowstone. •
Josh Holloway as Roarke Morris (season 3; guest season 4), a rancher and stockholder for Market Equities, who seek to claim Yellowstone for real estate. •
John Emmet Tracy as Ellis Steele (seasons 3–5), a real estate representative for Market Equities. •
Q'orianka Kilcher as Angela Blue Thunder (seasons 3, 5), a tribal lawyer working with Chief Rainwater. • Boots Southerland as Wade Morrow (season 3), a neighbouring rancher to Yellowstone. • Brent Walker as Clint Morrow (season 3), Wade's son and a ranch hand. •
Karen Pittman as Willa Hayes (season 3), the former CEO of Market Equities. •
Eden Brolin as Mia (seasons 3–4), a
barrel racer and Jimmy's ex-girlfriend. •
Hassie Harrison as Laramie (seasons 3–5), a barrel racer, Mia's friend, and Walker's girlfriend. •
Taylor Sheridan as Travis Wheatly (seasons 4–5; guest seasons 1–2), a
horse trader and an acquaintance of John Dutton. Sheridan is the co-creator of
Yellowstone and also portrays
Charles Goodnight in
1883. • Maria Julian as Kate (seasons 4–5; guest season 3), Jamie Dutton's assistant after becoming the Attorney General of Montana. •
Will Patton as Garrett Randall (season 4; guest season 3), Jamie's biological father. •
Jacki Weaver as Caroline Warner (seasons 4–5), the chairperson for the board of directors for Market Equities who hopes to build an airport and
ski resort on Yellowstone. • Jerynce Brings Plenty as Jerynce (season 4; guest season 5), Mo's teenage son. •
Piper Perabo as Summer Higgins (seasons 4–5), an
animal rights activist who befriends John despite their contrasting viewpoints. She later serves as his environmental advisor and becomes his love interest. • Kai Caster as Rowdy (season 5), the ranch foreman at Yellowstone in the 1990s. •
Lainey Wilson as Abby (season 5), a
country music singer who befriends Ryan. •
Dawn Olivieri as Sarah Atwood (season 5), a business heavy hitter for Market Equities brought in to bring ruin to the Duttons. Olivieri also portrays Claire Dutton in
1883. •
Lilli Kay as Clara Brewer (season 5), John Dutton's assistant after becoming the Governor of Montana. •
Matt Gerald as Grant Horton (season 5), a hitman hired by Sarah Atwood to assassinate John Dutton. •
Rory Cochrane as Kevin Dillard (season 5), the lead detective investigating John Dutton's death. ==Guest characters==