Frem mot den store finalen får de tre hoveddommerne besøk av kjendisgjestedommere hver uke. Gjestedommere har inkludert Pam Tillis, Paula Abdul, Pamela Anderson, Eve, Ariana Grande, Audra McDonald, Miley Cyrus, Troye Sivan, Neil Patrick Harris, Kathy Griffin, Debbie Harry, Debbie Reynolds, Khloé Kardashian, Kat Dennings, La Toya Jackson, Adam Lambert, Amber Riley, Demi Lovato, Bob Mackie, Rose McGowan, Olivia Newton-John, Tamar Braxton, Rebecca Romijn, Chanel Iman, Gigi Hadid, Kate Upton, Sharon Osbourne, Kelly Osbourne, Lizzo, Dan Savage, John Waters, Michelle Williams, Candis Cayne, Martha Wash, Natalie Cole, Dita Von Teese, Niecy Nash, Vanessa Williams, Paulina Porizkova, Wilmer Valderrama, The Pointer Sisters, Trina, Leah Remini, The B-52's, Jordin Sparks, Mel B, Kesha, Shania Twain, Graham Norton, Christina Aguilera, Lady Gaga, Adam Rippon, Elvira, Tiffany Pollard, Nicki Minaj, Robyn, Leslie Jones, Leslie Jordan, Normani, Chaka Khan, Jeff Goldbloom, Daisy Ridley og Whoopi Goldberg.