- Norbert Leo Butz - Paddy Chayefsky
- Aya Cash - Joan Simon
- Evan Handler - Hal Prince
- Nate Corddry - Neil Simon
- Kelli Barrett - Liza Minnelli
- Rick Holmes - Fred Weaver
- Bianca Marroquín - Chita Rivera
- Christiane Seidel - Hannah
- Paul Reiser - Cy Feuer
- Stephen Plunkett - Paul Grantner
- Laura Osnes - Shirley MacLaine
- Rachel Hilson - Jane
- Susan Misner - Joan McCracken
- Byron Jennings - George Abbott
- Nicholas Baroudi - Scott Brady
- P.J. Benjamin - Russ Brown
- Nick Blaemire - Rocky
- Jeff Blumenkrantz - Lonnie
- Brian Calì - Smokey
- Wayne Wilcox - Michael Kidd
- Brian Faherty - Robert Shafer
- Charlie Fersko - Stage Manager
- Ryan VanDenBoom - Eddie Phillips
- Kelli Berglund - Young Gwen Verdon
- Santino Fontana - James Henaghan
- Peter Scolari - Mel
- David Wilson Barnes - Joseph Verdon
- Ethan Slater - Joel Grey
- Jeremy Shamos - Joe Hardy
- Blake Baumgartner - Nicole Fosse
- George R. Sheffey - David Bretherton
- Tedra Millan - Chrissy
- Emily Dorsch - Gertrude Verdon
- Margaret Qualley - Ann Reinking
- Jake Lacy - Ron
- Alexis Carra - Sherry
- Ahmad Simmons - Ben Vereen
- Emma Caymares - Rebecca
- Paloma Garcia-Lee - Adrienne
- Jimmy Brewer - Stephen Schwartz
- Barbara Marineau - Zofia
- Mylinda Hull - Pauline
- Julie Klausner - Cheryl
- Lin-Manuel Miranda
- Michelle Williams
- Steven Levenson
- Sam Rockwell
- George Stelzner
- Charlotte Stoudt
- Tony Volante
Paul Reiser hace el papel de Cy Feuer.
Michelle Williams interpreta a Gwen Verdon en la serie.
Evan Handler interpreta a Hal Prince en la serie.
Sam Rockwell interpreta a Bob Fosse en la serie.
Norbert Leo Butz interpreta a Paddy Chayefsky en la serie.
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