- Baseball Teams
- Admirals
- Future 4400 returnee and mindreader Gary Navarro's minor league baseball team. (Season 2 episode Voices Carry)
- Albany Senators
- Baseball team. (Season 6 episode The Brush Man)
- Albuquerque Isotopes
- Duff buys the Springfield Isotopes and decides to move them to Albuquerque. (Season 12 episode Hungry, Hungry Homer)
- Atlanta Hawks
- Fictional baseball great Billy Chapel's team.
- Badgers
- Adam's kids' baseball team.
- Bears
- Little league baseball team.
- High school baseball team shown competing with Ashton High Tigers.
- Bedrock Giants
- Fred becomes umpire for the little-league baseball game between coach Barney's Bedrock Giants and the Grittsburg Pyrites, but his calls produce unsportsmanlike behavior in the Giants' fathers. (Episode Take Me Out to the Ballgame)
- Big Ben's Braves
- Kids baseball team that Big Ben sponsors.

- The Bingo Long Traveling All-Stars & Motor Kings
- Bolts
- Baseball team. Sticker on Foggy's laptop during flashback reads, "Conference Champs 2009". (Season 1 episode Nelson v. Murdock)
- Boston Gloves
- Baseball team (Season 1 episode Live Fast, Diane Nguyen)
- Braves
- Walden's future son's T-ball team. (Season 12 episode The Ol' Mexican Spinach)
- Bridgeport Lobsters
- Minor league baseball team the Bridgeport Lobsters visit New York. Their mascot and his wife who are having marital trouble appear before the court. Harry suggests a new job - as it turns out, Sid's Seafood House just had to let their clam go. (Season 7 episode A Closer Look)
- Bro-Freudians
- Softball team from Bob's conference. (Season 6 episode Shallow Throat)
- Burlington Drifters
- Rival baseball team of the Springfield Isotopes. (Season 2 episode Dancing' Homer)
- Capital City Capitals
- Baseball team from Dancin' Homer.
- Capital Congressmen
- Washington, D.C.'s resident baseball team before the Great War.
- Cestus Comets
- Kasidy invites Sisko to join her listening to her brother's baseball game - the Pike City Pioneers vs. the Cestus Comets. (Season 3 episode Family Business)
- Chicago Baby Humans
- Professional baseball team.
- Diane and Guy cheer on the Baby Humans at Hubba Bubba Field. (Season 1 episode Good Damage)
- (Season 6 episode Feel-Good Story)
- Cosmos
- Payola recording artist Tabitha Vixx sings the national anthem - and her hit song Trouble - when the Springfield Isotopes play the Cosmos/Cosmopolitans at Isotope Stadium, another team in the Tornado Belt League. (Season 17 episode Marge and Homer Turn a Couple Play)
- Cougars
- Jack bribes a high-school principal to allow him to play announcer for a baseball game. (Episode And Then Jack Became The Voice of the Cougars)
- Cubs
- George's neighbor and his little league kid sell him a case of peanut brittle in a deleted scene.
- Deertown Aztecs
- Carmelita's grade school baseball team that crashed in South America and decided to become Aztec warriors (Season 3 episode Sidekicks Don't Kiss)
- Deon Demons
- Baseball team owned by Larry Deon.
- Detroit Darkies
- Fake baseball team J makes joke about playing for when he gets pulled over by two white cops in the past.
- Dragons
- Charlie's baseball team. (episode Charlie and The Return of the Danger Girl)
- East Haven Sea Dogs
- Baseball team in Haven. Hi-Ho Sea Dogs! (Season 2 episode Sparks and Recreation)
- East Springfield
- Team in the City Softball League. (Season 3 episode Homer at the Bat)
- Falmouth Falcons
- Grace dates a young baseball player.
- Fort Springfield
- Military base in Springfield.
- After getting fired, Seymour Skinner re-enlists in the military. (Season 5 episode Sweet Seymour Skinner's Baadasssss Song)
- Civil war site, location of Springfield Elementary School field trip. (Season 6 episode The PTA Disbands)
- Team in the City Softball League. (Season 3 episode Homer at the Bat)
- Military base in Springfield that the government closes. (Season 5 episode $pringfield Or, How I Learned to Stop Worrying and Love Legalized Gambling)
- Lisa makes an appearance as Little Miss Springfield with Bob Hope. (Season 4 episode Lisa the Beauty Queen)
- Friends O'Clyde
- Jerry and George's comedy club softball team. (Season 2 episode The Pony Remark)
- The Fuzz
- Phil and Detective Connie Edwards old police baseball team.
- Galesburg Cardinals
- Baseball team a kid named Bruce used to pitch for before being taken by the Galesburg Grabber.
- Gestalt 9
- Softball team from Bob's conference. (Season 6 episode Shallow Throat)
- The Giants
- One of the girls' little league baseball team.
- Gotham City Eagles
- Baseball team in Gotham City.
- (episode Instant Freeze)
- (episode Rats Like Cheese)
- Grittsburg Pyrites
- Fred becomes umpire for the little-league baseball game between coach Barney's Bedrock Giants and the Grittsburg Pyrites, but his calls produce unsportsmanlike behavior in the Giants' fathers. (Episode Take Me Out to the Ballgame)
- Harding Catamounts
- He watched the six o'clock newsie restlessly - the fighting in Ecuador was worse, new cannibal riots had broken out in India, the Detroit Tigers had taken the Harding Catamounts by a score of 6–2 in an afternoon game - and when the first of the evening's big-money games came on at six-thirty, he went restlessly to the window and looked out.
- Hellions
- Baseball team. Karen: Would you have a shirt I could borrow, maybe? This one's a little wet, and I'm a Hellions fan.
- Hickory High School Huskers
- Hoboken Zephyrs
- Baseball team. (episode The Mighty Casey)
- Hudson Hayseeds
- Pennant on the wall at the old Sugarman place. (Season 4 episode The Old Sugarman Place)

- Improv
- Softball team made up of comedians and their friends. Jerry pitches, George itches. (Season 6 episode The Understudy)
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