List of cast members
The following is a list of SpongeBob SquarePants cast members who have worked on multiple episodes. For guest stars and one-time voice artists, see the list of guest stars.
Main cast
| Photo | Cast Member | Character(s) | Year Range |
| File:Tom Kenny.png | Tom Kenny | SpongeBob SquarePants, Gary the Snail, French Narrator, Patchy the Pirate | 1997–present |
| File:Bill Fagerbakke.jpg | Bill Fagerbakke | Patrick Star | 1997–present |
| File:Rodger Bumpass.jpg | Rodger Bumpass | Squidward Tentacles | 1997-present |
| File:Clancy Brown.jpg | Clancy Brown | Eugene H. Krabs | 1997-present |
| File:Doug Lawrence.jpg | Doug Lawrence | Sheldon J. Plankton | 1999–present (main cast since 2004) |
| File:Jill Talley.jpg | Jill Talley | Karen Plankton | 1999–present (main cast since 2004) |
| File:Carolyn Lawrence.jpg | Carolyn Lawrence | Sandy Cheeks | 1999–present |
| File:Mary Jo Catlett.jpg | Mary Jo Catlett | Mrs. Puff | 1999–present |
| File:Lori Alan.JPG | Lori Alan | Pearl Krabs | 1999–present |
For the first season, the main cast members were usually billed in a specific order: Tom Kenny (SpongeBob), Rodger Bumpass (Squidward), Bill Fagerbakke (Patrick), Clancy Brown (Mr. Krabs), Lori Alan (Pearl), Carolyn Lawrence (Sandy), and Mary Jo Catlett (Mrs. Puff). Mr. Lawrence (Plankton) and Jill Talley (Karen) would not be promoted to main cast members until the credits of the first movie.
Additional voices
The following cast members voice a wide variety of incidental characters in many episodes, rather than mainly voicing one character.
| Photo | Cast Member | Character(s) | Year Range |
| File:Es96.jpeg | Dee Bradley Baker | Miscellaneous characters | 1999–present |
| File:Mark Fite.jpg | Mark Fite | Miscellaneous characters | 2005–2012 |
| File:Sirena Irwin.jpg | Sirena Irwin | Miscellaneous characters | 1999–present |
| File:Frank Welker.png | Frank Welker | Miscellaneous characters | 2001–2003 |
| File:70915.jpg | John Gegenhuber | Old Man Jenkins, miscellaneous characters | 2018-present |
Recurring guest voices
The following cast members are credited as guest stars in multiple episodes.
| Photo | Cast Member | Character(s) | Year Range |
| File:170px-Ernest-Borgnine 2004.jpeg | Ernest Borgnine | Mermaid Man | 1999–2012 |
| File:Tim conway.jpg | Tim Conway | Barnacle Boy | 1999–2012 |
| File:Brian Doyle-Murray The Voice Of The Flying Dutchman.jpg | Brian Doyle-Murray | Flying Dutchman | 1999–present |
| File:100px-John O'Hurley.jpg | John O'Hurley | King Neptune, Seymour Scales | 2000–present |
| File:John Rhys-Davies.jpg | John Rhys-Davies | Man Ray | 2001–2002 |
| File:Bob Joles.jpg | Bob Joles | Man Ray | 2005-present |
