| Year | Title | Role | Notes |
| 2006 | Late Night with Conan O'Brien | Various | Episode: "2269" |
| 2006 | Cheap Seats without Ron Parker | Todd Lazarov | Episode: "NFL/MLB Arm Wrestling" |
| 2006 | Samurai Love God | (voice) | Miniseries |
| 2007 | Human Giant | Fabrice Fabrice, Various, Brolin DiBiasi | 2 episodes |
| 2007–2008 | Cavemen | Nick Hedge | 8 episodes |
| 2008 | Best Week Ever | Himself | Episode: "November 14, 2008" |
| 2008–2009 | Worst Week | Adam | 6 episodes |
| 2008–2011 | Childrens Hospital | Nicky, Dr. Geza | 6 episodes |
| 2008–2012 | The Life & Times of Tim | Stu (voice) | 30 episodes |
| 2009 | Reno 911! | El Chupacabra | 3 episodes |
| 2009 | Mayne Street | Paparazzo | Episode: "There's Ben" |
| 2009 | Sit Down, Shut Up | Andrew LeGustambos (voice) | 13 episodes |
| 2009–2010 | WordGirl | Reuben Grinder (voice) | 2 episodes |
| 2009–2015 | The League | Rodney Ruxin | Main cast; also writer |
| 2010 | Nick Swardson's Pretend Time | Headmaster | Episode: "I Just Got Voodoo'd" |
| 2010 | John Oliver's New York Stand-Up Show | Himself | Episode: "1.1" (as Fabrice Fabrice), "1.5" |
| 2011 | Community | Juergen | Episode: "Foosball and Nocturnal Vigilantism" |
| 2011 | Portlandia | Daniel Prison | 2 episodes |
| 2011–2012 | American Dad! | Dry Cleaner, Student, Andy Dick (voice) | 4 episodes |
| 2011–2015 | Parks and Recreation | The Douche | 5 episodes |
| 2012–2016 | Comedy Bang! Bang! | Various | 5 episodes |
| 2013–2015 | Kroll Show | Various characters | 23 episodes; also co-creator, executive producer, writer |
| 2013 | New Girl | Jamie | Episode: "Chicago" |
| 2013 | Burning Love | Khris | 4 episodes |
| 2013 | The Greatest Event in Television History | Jeremy Bay | Episode: "Hart to Hart" |
| 2013 | The Soup | Himself | Episode: "9.55" |
| 2013 | Comedy Central Roast of James Franco | Roaster | TV special |
| 2013 | Family Guy | Ricky (voice) | Episode: "Into Harmony's Way" |
| 2013 | Brody Stevens: Enjoy It! | Himself | 3 episodes |
| 2013 | The Jeselnik Offensive | Himself | 2 episodes |
| 2014 | Drunk History | Ronald Reagan | Episode: "Hollywood" |
| 2014 | Mulaney | Jesse Tyler Munoz | Episode: "It's a Wonderful Home Alone" |
| 2015 | Brooklyn Nine-Nine | Agent Kendrick | Episode: "Windbreaker City" |
| 2015 | Unbreakable Kimmy Schmidt | Christopher "Tristafé" Micelli | Episode: "Kimmy Rides a Bike!" |
| 2015 | The Grace Helbig Show | Himself | Episode: "Nick Kroll & Tyler Oakley" |
| 2015 | The Simpsons | Lem (voice) | Episode: "Halloween of Horror" |
| 2015 | SuperMansion | Cleb (voice) | Episode: "Babes In The Wood" |
| 2016 | Animals. | Jerry (voice) | Episode: "Pigeons." |
| 2016 | Bajillion Dollar Propertie$ | Graham Simon | Episode: "Predator Party" |
| 2016 | Mr. Neighbor's House | Photo Joe (voice) | TV special |
| 2017 | 32nd Independent Spirit Awards | Himself (host) | TV special |
| 2017–2021 | Bob's Burgers | Mr. Desanto / Customer (voice) | 2 episodes |
| 2017 | Oh, Hello on Broadway | Gil Faizon | TV special |
| 2017 | I'm Sorry | Lon | Episode: "Weekend Alone" |
| 2017–2025 | Big Mouth | Nick Birch / Maury the Hormone Monster / Coach Steve / Lola / various voices | 81 episodes; also co-creator, executive producer, writer |
| 2017 | At Home with Amy Sedaris | Randy Fingerling | Episode: "Gift Giving" |
| 2018 | 33rd Independent Spirit Awards | Himself (host) | TV special |
| 2018 | Explained | Narrator | Episode: "!" |
| 2018 | Portlandia | Gil Faizon | Episode: "Peter Follows P!nk" |
