Krull may refer to:
- Alexander Krull (born 1970), singer
- Annie Krull (1876-1947), German operatic soprano
- Felix Krull, the title character in The Confessions of Felix Krull, Confidence Man: The Early Years
- Germaine Krull (1897-1985), photographer
- Kathleen Krull (born 1952), author of children's books
- Krull (film), a 1983 heroic fantasy film
- Krull (video game), the arcade, Atari and pinball adaptations of that film
- Krull, a country in the fictional Discworld
- Suzanne Krull (born 1966), actress
- Wolfgang Krull, German mathematician
- Krull dimension
- Krull topology
- Krull's intersection theorem
- Krull's principal ideal theorem
- Krull's theorem
- Krull–Akizuki theorem
- Krull-Schmidt theorem