Undying can refer to:
Film The Undying Monster, a 1942 American horror film The Undying (film), a 2011 American romantic thriller film
Games Clive Barker's Undying, a 2001 first-person shooter game Undying (video game), a 2023 survival game
Literature The House of the Undying in A Song of Ice and Fire, epic fantasy series by George R.R. Martin The Undying: Pain, Vulnerability, Mortality, Medicine, Art, Time, Dreams, Data, Exhaustion, Cancer, and Care, a 2019 non-fiction book by Anne Boyer The Undying in the 1979 fantasy novel The Spellcoats by Diana Wynne Jones
Music Colton Grundy: The Undying, 2004 studio album by Blaze Ya Dead Homie Undying (song), a 2016 single by The Gazette