– Caan, James (s16e02, Schauspieler)
– Caldwell, Christopher D. (s34e12, Dragqueen "Bob the Drag Queen")
Calleja, Joseph (s11e19, Musiker)
– Canseco, Jose (s03e17, Baseballer)
Cantor, Andrés (s25e16, Sportreporter)
Carey, Rik (s14e04, Baha Men)
– Carlsen, Magnus (s28e15, Schachspieler)
Caro, Robert A. (s24e12, Journalist)
– Carson, Johnny (s04e22)
Cavett, Dick (s06e15)
– Cena, John (s36e01, Schauspieler)
Chamberlin, Jimmy (s07e24, Smashing Pumpkins)
Chasez, Joshua Scott (s12e14, 'N Sync)
– Chabon, Michael (s18e06, Schriftsteller)
– Chast, Roz (s29e02, Künstlerin)
Clancy, Tom (s15e10, Schriftsteller)
Clark, Dick (s11e04)
– Clayton, Adam (s09e22, U2)
– Clemens, Roger (s03e17, Baseballer)
– Clowes, Daniel (s19e07, Schriftsteller)
– Colicchio, Tom (s23e05, Koch)
– Chong, Tommy (s22e16, Cheech & Chong)
– Conal, Robbie (s23e15, Künstler)
Conway, Tim (s08e24)
– Cool, Tré (Die Simpsons – Der Film)
Cooney, Gerry (s05e10)
– Cooper, Anderson (s25e06, Journalist)
Corgan, William Patrick (s07e24, Smashing Pumpkins)
Costas, Bob (s21e12, Kommentator)
– Costello, Elvis (s14e02)
– Cowell, Simon (s21e23, Produzent)
Coyote, Peter (s35e04, Schauspieler)
– Cuban, Mark (s20e08, Unternehmer)
Cummings, John William (s05e04)
– Cuomo, Rivers (s31e21, Weezer)
Curry, Stephen (s28e17, Basketballer)