| Year | Title | Role | Notes |
|---|
| | Barnaby Jones | Vince Gentry | Episode: "Dead Heat" |
| | Family | Attendant | Episode: "Taking Chances: Part I" |
| Barnaby Jones | Car Salesman | Episode: "Duet for Dying" |
| Carter Country | Bob Phillips | Episode: "The Fireside Burnside Budget Chat" |
| | Lou Grant | Clay Starkes | Episode: "Kidnap" |
| The Waltons | Jeb Sanders | Episode: "The Wager" |
| Lou Grant | Cyrus | Episode: "Sweep" |
| | Little House on the Prairie | Jed | Episode: "Darkness Is My Friend" |
| | Lou Grant | The Intruder | Episode: "Rape" |
| Sanford | Al | Episode: "Cal the Coward" |
| The Gangster Chronicles | Dutch Schultz | 13 episodes |
| Best of the West | Hombre | 2 episodes |
| | Report to Murphy | Vinny | Episode: "Papillon" |
| – | T.Jonathan banks in airplane You play basketball for the Los Angeles Lakers! May 1, It is known for using surreal humor and fast-paced slapstick comedy , including visual and verbal puns, gags, running jokes , and dark humor. Hagerty has also enjoyed moderate success on television, which includes the first two seasons of the historical comedy, Black Monday. J. Hooker | Danny Scott / Freddy Baker | 2 episodes |
| | Hill Street Blues | Reggie | 2 episodes |
| Whiz Kids | Unknown | Episode: "Programmed For Murder" |
| | Jessie | Ernie Ross | Episode: "Pilot" |
| Cagney & Lacey | Keith Edsin | Episode: "Old Debts" |
| | Otherworld | Commander Nuveen Kroll | 8 episodes |
| Hunter | Detective Gary Krewson | Episode: "The Big Fall" |
| | Falcon Crest | Kolinksi | 8 episodes |
| Designing Women | Eldon Ashcroft IV | Episode: " Ways to Decorate a Gas Station" |
| – | Wiseguy | Frank McPike | 74 episodes |
| | Star Trek: Deep Space Nine | Shel-La | Episode: "Battle Lines" |
| | Highlander: The Series | Mako | Episode: "Under Colour of Authority" |
| Matlock | Jack Starling | Episode: "The P.I." |
| Walker, Texas Ranger | Shelby Valentine | Episode: "Deadly Reunion" |
| Tales from the Crypt | William | Episode: "The Assassin" |
| | Due South | Garret | Episode: "Heaven and Earth" |
| Women of the House | Jim Sugarbaker | 2 episodes |
| – | SeaQuest | Maximillian Scully | 2 episodes |
| | Diagnosis: Murder | Max Jupe | Episode: "Murder by Friendly Fire" |
| – | Fired Up | Guy Mann | 28 episodes |
| | Diagnosis: Murder | Bruce Locatelli | Episode: "Murder by Remote" |
| – | The Trouble With Normal | Dr.
Lowell | 2 episodes |
| | The District | Monya Pastov | Episode: "Fools Russian: Part I" |
| | Alias | Frederick Brandon | 2 episodes |
| Strong Medicine | Frank Hardwyck | Episode: "Skin" |
| | Joan of Arcadia | Sheriff Mike Rakowski | Episode: "Jump" |
| – | CSI: Crime Scene Investigation | Bobby Jensen | 2 episodes |
| | E-Ring | Admiral Cooper | 4 episodes |
| | Ghost Whisperer | Lyle Chase | Episode: "Friendly Neighborhood Ghost" |
| Without a Trace | Sal Marcello | Episode: "Check Your Head" |
| – | Day Break | Shadow Man | 7 episodes |
| | Dexter | FBI Deputy Director Max Adams | 2 episodes |
| | ER | Robert Truman | Episode: "Atonement" |
| Shark | Jason Normandy | 2 episodes |
| Life | Nathan Gray | Episode: "Crushed" |
| Eli Stone | Agent Johnathan Maine | Episode: "Owner of a Lonely Heart" |
| | Lie to Me | Ex-FBI Agent Bitcher | Episode: "Sacrifice" |
| Cold Case | John Clark | Episode: "Jackals" |
| Castle | Bruce Kirby | Episode: "Hell Hath No Fury" |
| – | Breaking Bad | Mike Ehrmantraut | 25 episodes |
| | Modern Family | Donnie Pritchett | Episode: "The Musical Man" |
| Two and a Half Men | Pawn Broker | Episode: "A Fishbowl Full of Glass Eyes" |
| CSI: Miami | Oscar Duarte | Episode: "Long Gone" |
| | Ringer | Remy Osterman | 2 episodes |
| Parks and Recreation | Steve Wyatt | Episode: "Ben's Parents" |
| Vegas | Angelo LaFlatta | 2 episodes |
| | Bloodline | Leo Killpriest | Pilot |
| Body of Proof | Glenn Fitz | Episode: "Daddy Issue" |
| – | Axe Cop | Various Voices | 3 episodes |
| | Community | Professor Buzz Hickey | 11 episodes |
| Mike Tyson Mysteries | The Wizard | Voice, episode: "Is Magic Real?"[5] |
| – | Better Call Saul | Mike Ehrmantraut | 59 episodes |
| | The Lizzie Borden Chronicles | Mr.
Flowers | 3 episodes |
| Major Lazer | The Law | Voice, episode: "Escape from Rave Island" |
| Gravity Falls | Filbrick Pines | Voice, episode: "A Tale of Two Stans"[5] |
| Robot Chicken | Composite Superman | Voice, episode: "Magical Friendship" |
| The Expanse | Executive Officer | Episode: "Dulcinea" |
| MythBusters | Mike Ehrmantraut | Episode: "Supernatural Shooters" |
| Last Week Tonight | Himself | Episode: "Sex Education"[6] |
| – | Skylanders Academy | Eruptor | Voice, 38 episodes |
| | Dr.
Ken | Dr. Erwin | Episode: "Ken's Professor" |
| – | Tangled: The Series | Quirin | Voice, 8 episodes[5] |
| – | F Is for Family | William Murphy | Voice, 12 episodes |
| | The Casagrandes | Coach Crawford | Voice, episode: "Team Effort" |
| The Comey Rule | James Clapper | 2 episodes |
| | A Tale Dark & Grimm | Johannes | Voice, 7 episodes[5] |
| | Kite Man: Hell Yeah! | Sean Noonan | Voice[7] |
| | Constellation | Henry/Bud Caldera | 8 episodes[8] |