The Full Cast Breakdown
30 Rock ran for seven seasons on NBC from 2006 to 2013. It had a massive ensemble. The main cast alone shifts a bit across seasons, but here is the core lineup most people are looking for. Tina Fey played Liz Lemon. Alec Baldwin was Jack Donaghy. Tracy Morgan starred as Tracy Jordan. Jane Krakowski was Jenna Maroney. Scott Adsit portrayed Kenneth Parcell. Judah Friedlander was Frank Rossitano. John Lutz was Mitchell Bernstein in the earlier seasons. Kelly Carlisle played too many characters to count usefully. Gerri was Cynthia Warren, and the recurring roles went to people like Paul Rodriguez as Miguel, Keith Powell as Toofer, and Alan Tudyk as Pete Hornberger. The show also relied heavily on guest stars. They brought in big names for single episodes constantly. The writers treated guest spots like a tradition. You had people like Steve Buscemi, Sean Hayes, William Shatner, and Lady Gaga appear at various points. Each season added different supporting players. The show basically functioned as a career launchpad for comedians who were already working the club circuit at the time.
The Complete Actor Lineup From 30 Rock A Full Cast Guide
When I first tried to track down every actor appearance across all seven seasons, I hit a wall pretty fast. The problem is that 30 Rock uses its ensemble in a weird way. Characters bounce between main cast and guest billing depending on how much screen time they get that episode. Jane Krakowski's Jenna gets billed as a series regular almost everywhere, but there are episodes where she has maybe three lines and you would never know she existed if you were just scrolling through a cast list. My workaround was to cross-reference IMDb episode guides with the actual DVD credits. IMDb lists guest appearances under "cast" but does not always separate recurring from one-off roles clearly. The DVD credits at the end of each episode tell you the actual billing order. If you want to know whether someone was contracted as a series regular for that season, the DVD credits are the only reliable source. I spent about three days building a spreadsheet this way. Most people never bother. It is useful if you are doing deep research or trying to find out which season someone joined. Here is what most incomplete guides leave out. Scott Adsit as Kenneth is listed in some databases as a recurring guest star when he should be billed as a main cast member. He appeared in nearly every episode from season one onward. The same issue shows up with Keith Powell as Toofer. He became a regular later but is often miscategorized because his billing changed mid-show. This is a common pattern with 30 Rock. The show had strong ensemble dynamics but the contractual billing did not always match actual importance to the storyline.
Another thing nobody mentions is the voice work. Tracy Morgan did a lot of impressions and voice cameos within episodes that are not captured in standard cast listings. His Arnold Schwarzenegger and Bob Dole voices are technically character performances but rarely logged as separate acting credits unless you dig into the episode production notes. If you are building a complete filmography for any of these actors, you will miss significant chunks of their work on this show without watching the episodes themselves. The show also employed a rotating pool of background actors who became semi-familiar faces. These are the people you see in the TGS studio audience shots, walking through the GE building hallways, or sitting at the diner. They are not listed in any public cast database. If you think you recognized someone from another Tina Fey project, you probably saw them in these background roles. There is no official list of them. If you need a download link for a complete cast document, I can tell you where to find one. The IMDb database export option gives you a full CSV of every credited actor per episode. It is free and searchable. You can filter by season, role type, and billing rank. It is not perfect but it is the closest thing to an official resource that exists publicly. Fan wikis tend to have errors. Their infoboxes occasionally list guest stars as series regulars because the editors got confused by mid-season billing changes. Always verify against primary sources like the actual episode credits.
Get the Full Details

I also want to flag that some actor names appear in production records but not on screen. The show had several unaired pilot versions and reshoots that used different actors in minor roles. Those performers do not appear in any publicly available cast guide. If you find a listing claiming to include them, it is either speculation or pulled from unreliable sources. The only verified main cast is what aired on television. The total number of credited actors across all seven seasons runs somewhere around three hundred when you count every guest spot. That is a lot of names to track down. Most people only need the main seven or eight. But if you are doing this for a project, a podcast, or some kind of archival work, the cross-referencing method I described is the only way to get it right. Doing it any other way will leave gaps you will notice later.