The Mouseketeers were a group of children that starred in all 3 incarnations of The Mickey Mouse Club.
The 1950s Mouseketeers
There were 39 mouseketeers in total during this incarnation. (42 if you count the three adult leaders)

Front row; L–R: Annette Funicello, Karen Pendleton, Cubby O'Brien, Sherry Alberoni, Dennis Day. Row two: Charley Laney, Sharon Baird, Darlene Gillespie, Jay-Jay Solari. Row three: Tommy Cole, Cheryl Holdridge, Larry Larsen, Eileen Diamond. Row four: Lonnie Burr, Margene Storey, Doreen Tracey. Back row: Jimmie Dodd, Bobby Burgess. Not pictured: Roy Williams
NOTE: (d.) indicates that this mouseketeer is deceased.
Here they are in alphabetical order:
Adults:
- Bob Amsberry (d. 1957)
- Jimmie Dodd (d. 1964)
- Roy Williams (d. 1976)
Children:
The Core Nine (all three seasons):
- Sharon Baird
- Bobby Burgess
- Lonnie Burr
- Tommy Cole
- Annette Funicello (d. 2013)
- Darlene Gillespie
- Cubby O'Brien
- Karen Pendleton (d. 2019)
- Doreen Tracey (d. 2018)
The Two Two's (two seasons):
- Dennis Day (d. 2018)
- Cheryl Holdridge (d. 2009)
All the Rest (one season or less):
- Nancy Abbate
- Sherry Alberoni
- Billie Jean Beanblossom
- Johnny Crawford
- Eileen Diamond
- Dickie Dodd (d. 2013)
- Mary Espinosa
- Bonnie Lynn Fields (d. 2012)
- Don Grady (d. 2012)
- Judy Harriet
- Linda Hughes
- Dallas Johann
- Lee Johann
- Bonni Lou Kern (d. 2020)
- Charley Laney (d. 1997)
- Larry Larsen (d. 2018)
- Lynn Ready (d. 2018)
- Paul Petersen
- Mickey Rooney, Jr.
- Tim Rooney (d. 2006)
- Mary Sartori
- Bronson Scott
- Mike Smith (d. 1982)
- Jay-Jay Solari
- Ronnie Steiner
- Margene Storey
- Mark Sutherland
- Don Underhill
The 1970s Mouseketeers

1977 cast.
This cast was more diverse than the original. It featured 13 mouseketeers and no adult leaders.
- Billy "Pop" Attmore
- Scott Craig (d. 2003)
- Nita Dee
- Mindy Feldman (sister of Corey Feldman)
- Angel Florez (d. 1995)
- Allison Fonte
- Shawnte Northcutte
- Kelly Parsons
- Julie Piekarski
- Todd Turquand
- Lisa Whelchel
- Curtis Wong
The 1990s Mouseketeers
This cast featured 35 mouseketeers and 3 adult hosts. Unlike the previous 1950s and 1970s casts, this cast does not wear the traditional "mouse ears".
- Josh Ackerman
- Christina Aguilera
- Lindsey Alley

Some of the 90's cast.
- Rhona Bennett
- Nita Booth
- Mylin Brooks
- Brandy Brown
- Jason Blain Carson
- JC Chasez
- Braden Danner
- Tasha Danner
- Nikki DeLoach
- T.J. Fantini
- Albert Fields
- Dale Godboldo
- Ryan Gosling
- Tiffini Hale
- Chase Hampton
- Raquel "Roqué" Herring
- David Kater
- Tony Lucca
- Ricky Luna
- Tate Lynche (d. 2015)
- Deedee Magno
- Jennifer McGill
- Terra McNair
- Ilana Miller
- Jason Minor
- Terri Misner (Adult co-host)
- Matt Morris
- Fred Newman (Adult co-host)
- Kevin Osgood
- Damon Pampolina
- Mowava Pryor (Adult co-host)
- Keri Russell
- Britney Spears
- Justin Timberlake
- Marc Worden