| Year | Title | Functioned as | Notes | Ref. |
| Actor | Director | Producer | Role |
| 1986 | The Twilight Zone | Yes | No | No | Jeff Mattingly | Episode: "What Are Friends For?/Aqua Vita" | |
| 1986–1987 | Morningstar/Eveningstar | Yes | No | No | Alan Bishop | 7 episodes | |
| 1987 | Convicted: A Mother's Story | Yes | No | No | Matthew Nickerson | Television film | |
| Hello Kitty's Furry Tale Theater | Uncredited | No | No | Mowser | Episode: "Phantom of the Theater" | |
| 1988 | ABC Weekend Special: Runaway Ralph | Yes | No | No | Garfield | Television film | |
| Run Till You Fall | Yes | No | No | David Reuben | Television film | |
| 1988–1993 | The Wonder Years | Yes | No | No | Kevin Arnold | Lead role; 115 episodesPeople's Choice Award for Favorite TV Performer(1989–90)Viewers for Quality Television Award Award for Best Actor in a Quality Comedy Series(1989–90)Young Artist Award for Best Young Actor in a Television Series(1988–89)Nominated – Golden Globe Award for Best Actor – Television Series Musical or Comedy(1989–90)Nominated – Primetime Emmy Award for Outstanding Lead Actor in a Comedy Series(1989–90) | |
| 1990 | When You Remember Me | Yes | No | No | Mike Mills | Television film | |
| Saturday Night Live | Yes | No | No | Himself | Host; episode: "Fred Savage/Technotronic" | |
| 1991 | Christmas on Division Street | Yes | No | No | Trevor Atwood | Television film | |
| 1992 | Seinfeld | Yes | No | No | Himself | Episode: "The Trip" | |
| 1996 | No One Would Tell | Yes | No | No | Bobby Tennison | Television film | |
| How Do You Spell God? | Yes | No | No | Himself (Narrator) | Television film | |
| 1997 | The Outer Limits | Yes | No | No | Danny Martin | Episode: "Last Supper" | |
| 1997–1999 | Working | Yes | Yes | No | Matt Peyser | Lead role; 39 episodes | |
| 1998 | Boy Meets World | Yes | No | No | Stuart | Episode: "Everybody Loves Stuart" | |
| 1999–2000 | Boy Meets World | No | Yes | No | — | 2 episodes | |
| 2001 | All About Us | No | Yes | No | — | 2 episodes | |
| 2001–2002 | Even Stevens | No | Yes | No | — | 2 episodes | |
| 2001–2003 | Oswald | Yes | No | No | Oswald | Voice, 25 episodes | |
| Nick Jr. | Yes | No | No | Himself (Host) | Host from September 3, 2001 – August 29, 2003 | |
| 2003 | Law & Order: Special Victims Unit | Yes | No | No | Michael Gardner | Episode: "Futility" | |
| 2003–2005 | That's So Raven | No | Yes | No | — | 2 episodes | |
| 2004 | Justice League Unlimited | Yes | No | No | Hank Hall / Hawk | Voice, episode: "Hawk and Dove" | |
| Drake & Josh | No | Yes | No | — | 1 episode | |
| 2004–2005 | Unfabulous | No | Yes | No | — | 5 episodes | |
| 2004–2006 | Phil of the Future | No | Yes | Yes | — | 9 episodesNominated – Directors Guild of America Award for Outstanding Directorial Achievement in a Children's Program(Episode: "Not So Great Great Great Grandpa") | |
| 2004–2007 | Kim Possible | Yes | No | No | Wego | Voice, 2 episodes | |
| Ned's Declassified School Survival Guide | No | Yes | No | — | 6 episodes | |
| 2005 | Kitchen Confidential | No | Yes | No | — | 1 episode | |
| Zoey 101 | No | Yes | No | — | 2 episodes | |
| What I Like About You | No | Yes | No | — | 1 episode | |
| 2006 | Crumbs | Yes | No | No | Mitch Crumb | Lead role; 13 episodes | |
| Holidaze: The Christmas That Almost Didn't Happen | Yes | No | No | Rusty | Voice, TV special | |
| 2007 | Cavemen | No | Yes | No | — | 1 episode | |
| Hannah Montana | No | Yes | No | — | 1 episode | |
| 2007–2008 | Doozers | No | Yes | No | — | 4 episodes | |
| Wizards of Waverly Place | No | Yes | No | — | 3 episodesNominated – Directors Guild of America Award for Outstanding Directorial Achievement in a Children's Program(Episode "The Crazy 10 Minute Sale") | |
| 2007–2009 | It's Always Sunny in Philadelphia | No | Yes | Yes | — | 19 episodes | |
| 2008 | Ugly Betty | No | Yes | No | — | 1 episode | |
| Worst Week | No | Yes | No | — | 1 episode | |
| 2009 | Family Guy | Yes | No | No | Himself | Voice, episode: "Fox-y Lady" | |
| Zeke and Luther | No | Yes | No | — | Pilot episodeNominated – Directors Guild of America Award for Outstanding Directorial Achievement in a Children's Program(Episode "Pilot") | |
| Ruby & the Rockits | No | Yes | No | — | 1 episode | |
| 2009–2010 | Greek | No | Yes | No | — | 2 episodes | |
| Party Down | No | Yes | Yes | — | 9 episodes; executive producer | |
| 2010 | Sons of Tucson | No | Yes | No | — | 1 episode | |
| Big Time Rush | No | Yes | No | — | 2 episodes | |
