Lonzo is a surname, a male given name, and a shortening of Alonzo. It may refer to:
Given name
- Lonzo Anderson (1905–1993), American children's author
- Lonzo Ball (born 1997), American basketball player
- Lonzo Bullie (born 1947), American football coach
- Lonzo Nzekwe, filmmaker
- Lonzo R. Wilkinson, aka Stalker, a G.I. Joe character
Nickname
- Lloyd "Lonzo" George (1924–1991), part of American country music duo of Lonzo and Oscar
Surname
- Fred Lonzo (born 1950), American jazz trombonist