Olivia Newton-John as Kira

Gene Kelly as Danny McGuire

Michael Beck as Sonny Malone

James Sloyan as Simpson

Katie Hanley as Sandra

Fred McCarren as Richie

Ren Woods as Jo

Dimitra Arliss as Helen

Sandahl Bergman as Muse 1

Lynn Latham as Muse 2

Melinda Phelps as Muse 3

Cherise Bates as Muse 4

Juliette Marshall as Muse 5

Marilyn Tokuda as Muse 6

Yvette Van Voorhees as Muse 7

Teri Beckerman as Muse 8

Marty Davis as Male Guard

Bebe Drake as Female Guard

Matt Lattanzi as Young Danny McGuire / Xanadu Dancer

Michael Cotten as The Tubes

Bill Spooner as The Tubes

Cynthia Windham as Dancer