Cat Deeley
Self - Host (317 eps)
Stephen 'tWitch' Boss
Self (317 eps)
Matthew Morrison
Self (317 eps)
Maksim Chmerkovskiy
Self (317 eps)
Allison Holker
Self - Judge (317 eps)
Nigel Lythgoe
Self - Judge (267 eps)
Mary Murphy
Self - Judge (180 eps)
Adam Shankman
Self - Judge (48 eps)
Paula Abdul
Self - Judge (31 eps)
Jason Derulo
Self - Judge (30 eps)
Mia Michaels
Self - Judge (23 eps)
JoJo Siwa
Self - Judge (21 eps)
Jeanine Mason
Herself (20 eps)
Janette Manrara
Self (17 eps)
Vanessa Hudgens
Self - Judge (15 eps)
Lauren Sánchez
Self - Host (12 eps)
Leah Remini
Self (12 eps)
Alan Bersten
Himself (8 eps)
Tate McRae
Self (8 eps)
Teddy Coffey
Self - Contestant (7 eps)
Alex Wong
Himself - Contestant (4 eps)
Mika
Self - Musical Guest (1 eps)
Lev Cameron
Self (1 eps)
Maddie Ziegler
Self - Judge (1 eps)
Courtney Galiano
Herself (1 eps)
Drew Barrymore
(archive footage) (1 eps)
Roger L. Jackson
(archive footage) (1 eps)
