| Year | Title | Role | Notes |
| 1968 | Barris and Company | Writer | Variety show, CBC Television |
| The Beautiful Phyllis Diller Show | Variety sketch series, NBC |
| 1969 | Rowan & Martin's Laugh-In |
| The Jim Nabors Hour | Variety sketch series, CBS |
| 1970–1971 | The Hart and Lorne Terrific Hour | Costar, writer, producer |
| 1973 | The Burns and Schreiber Comedy Hour | Writer | Summer variety sketch series, ABC |
| Lily | Producer, writer | Comedy variety special, CBS |
| The Perry Como Winter Show | Writer | Variety comedy special, NBC |
| 1974 | Flip Wilson... Of Course | Producer, writer | Comedy variety special, NBC |
| The Hollywood Palladium | Writer | Comedy variety special, CBS |
| 1975 | Lily | Producer, writer |
| The Lily Tomlin Special |
| 1975–1980; since 1985 | Saturday Night Live | Executive producer, creator | Variety sketch series, NBC |
| 1978 | All You Need Is Cash: The Rutles | Executive producer | Television movie |
| 1982 | The Concert in Central Park | Concert special, HBO |
| 1984 | The New Show | Producer | Variety sketch series, NBC |
| 1988–1990 | Sunday Night | Executive producer | Late night television, NBC |
| 1988 | 40th Primetime Emmy Awards | Awards ceremony, FOX |
| 1988–1995; 2022 | The Kids in the Hall | Variety sketch series, CBC/Amazon Prime Video |
| 1991 | Lookwell | Producer | Television Movie, NBC |
| 1993–2009 | Late Night with Conan O'Brien | Executive producer | Variety talk series, NBC |
| 1993–1994 | The Vacant Lot | Variety sketch series, CBC/Comedy Central |
| 1995 | Frosty Returns | Television Special, CBS |
| 2002 | The Rutles 2: Can't Buy Me Lunch | Television film |
| The Colin Quinn Show | Variety talk series, NBC |
| 2006 | Sons and Daughters | Producer | Television series, ABC |
| 2006–2013 | 30 Rock | Executive producer | Television series, NBC |
| 2009–2014 | Late Night with Jimmy Fallon | Variety talk series, NBC |
| 2011–2018 | Portlandia | Variety sketch series, IFC |
| 2011–2013 | Up All Night | Television series, NBC |
| 2013–2015 | The Awesomes | Television series, Hulu |
| Since 2014 | The Tonight Show Starring Jimmy Fallon | Variety talk series, NBC |
| Late Night with Seth Meyers |
| 2014 | Howard Stern Birthday Bash | Himself | Television special |
| 2014–2015 | Mulaney | Executive producer | Television series, Fox |
| 2014 | The Maya Rudolph Show | Variety talk series, IFC |
| 2015–2017 | Man Seeking Woman | Variety sketch series, FX |
| 2015–2022 | Documentary Now! | Variety sketch series, IFC |
| 2015 | Saturday Night Live 40th Anniversary Special | Executive producer, himself | Television special, NBC |
| Adele Live in New York City | Executive producer |
| 2016 | Comedians in Cars Getting Coffee | Guest – Himself | Episode: "Everybody Likes to See the Monkeys", Netflix |
| Maya & Marty | Executive producer | Variety sketch series, NBC |
| 2017–2018 | Detroiters | Television series, Comedy Central |
| 2017 | The David S. Pumpkins Halloween Special | Television special, NBC |
| 2018–2021 | Bio | Television series, NBC/Peacock |
| 2018 | 70th Primetime Emmy Awards | Awards ceremony, NBC |
| Love, Gilda | Himself | Documentary, HBO |
| Norm Macdonald Has a Show | Guest – Himself | Episode: "Lorne Michaels", Netflix |
| 2019–2021 | Shrill | Executive producer | Television series, Hulu |
