The tables below contain all known guest stars for each season of the original Mickey Mouse Club, by order of appearence. Some guests appeared more than once per season; others had a single appearence turned into two by the film editors. Disney paid a standard starting guest fee of $450, though at least one child guest star received $1,000 for his performance. Many guests didn't even get that; they were Disney contract players, voice-over artists, or employees, who appeared without additional compensation. After the USA nearly swept the Olympic figure skating awards at Cortina d'Ambrezzo, Italy, in February 1956, the show's producers booked five skating acts for guest star spots during the second season. The vast majority of guest stars, however, had tie-ins to other Disney projects. Third season guest stars appeared on either Mondays or Wednesdays, with Tuesdays given over to serials and cartoons.
Where available, images have been provided from the guest's actual appearence on the show. Failing that, general publicity photos or images from other film or television appearences have been used. For some of these folks, however, there is simply no picture available. Only original appearences are listed; reruns are excluded.
Most of the information below was extracted from original research done by Bill Cotter, however, any errors of fact or mistakes in interpretation are my own.
  Season 1   (1955-56)  
  Season 2   (1956-57)  
  Season 3   (1957-58)  

Wally Boag
Comedian
Oct 4, 1955

The Rolling Robinsons
Roller Skaters
Oct 2, 1956

Van Nuys ROTC
HS Drill Team
Oct 2, 1957

Sons of the Pioneers
Western Singers
Oct 11, 1955

Dave Marco
Silhouette puppets
Oct 9, 1956

The Lennon Sisters
Singing Quartet
Oct 14, 1957

George Givot
Comedian
Disney Voice Actor
Oct 18, 1955

The Birk Twins
Acrobats
Oct 16, 1956

Angels in Pigtails
Children's Choir
(1st half)
Oct 16, 1957

Jeri Southern
Singer
Oct 25, 1955

Leo Carrillo
Singer
Oct 23, 1956

Wally Boag
Comedian
Dec 09, 1957

Jerry Colonna
Comedian
Nov 1, 1955

Owen McGiveney
Actor
Oct 30, 1956

Angels in Pigtails
Children's Choir
(2nd half)
Dec 25, 1957

The Mellomen
Singing Quartet
Nov 8, 1955

The Maxwells
Comedy Skaters
Nov 6, 1956

Carol Lynley
Disney Actress
Feb 26, 1958

Clarence Nash
Cliff Edwards
Jose Oliveira
Nov 15, 1955

Ronnie Robertson
Willie Krall
Ice Skaters
Nov 13, 1956

Tim Considine
Disney Actor
Mar 5, 1958

The Bell Sisters
Singing Duo
Taped: 7/30/1955
Nov 22, 1955

Cliff Edwards
Singer
Nov 20, 1956

Kevin Corcoran
Disney Actor
Mar 18, 1958

Candy Candido
Disney Singer/Voice
Nov 29, 1955

Firehouse 5+2
Dixieland Jazz
Nov 27, 1956
 
 

The Happy Jesters
Comic Singing Trio
Dec 6, 1955

Ray MacDonald
Peggy Ryan
Tap Dancers
Dec 4, 1956
 
 

Morey Amsterdam
Comedian
Dec 13, 1955

Fess Parker
Buddy Ebsen
Disney Actors
Dec 11, 1956
 
 

Candy and Nancy
Unknown act
Dec 20, 1955

Robert Lamouret
Ventriloquist
Dec 18, 1956
 
 

Firehouse 5+2
Dixieland Jazz
Dec 27, 1955

Donna Atwood
Ice Skater
(1st half)
Dec 25, 1956
 
 

Carla Alberghetti
Singer
Jan 17, 1956

Phil Romayne
Cathy Steele
Ice Skaters
Jan 1, 1957
 
 

Helene Stanley
Disney Actress
Jan 24, 1956

Donna Atwood
Ice Skater
(2nd Half)
Feb 5, 1957
 
 

Hank Penny
Singer/Comedian
Jan 31, 1956

Fess Parker
Disney Actor
Feb 12, 1957
 
 

Archer and Gile
Folk Singers
Feb 7, 1956

Master Ralph
Xylophonist
Feb 19, 1957
Website
 
 

Larry Collins
Trombonist
Feb 14, 1956

Judy Canova
Tweeny England
Singers
Apr 16, 1957
 
 

Clarence Nash
Cliff Edwards
Jose Oliveira
Feb 21, 1956

Gil Lamb
Acrobat
Apr 23, 1957
 
 

Donald Novis
Judy Marsh
Wally Boag
Feb 28, 1956

Sid Miller
MMC Director
Apr 30, 1957