Leon "Ndugu" Chancler (born July 1, 1952) is a jazz funk drummer, percussionist, studio musician, composer and producer.

Chancler was born in Shreveport, Louisiana and began playing drums when he was thirteen years old. While in high school, Chancler played with Willie Bobo and the Harold Johnson Sextet. Chancler graduated from California State University, Dominguez Hills with a degree in music education. By then he had already performed with the Gerald Wilson Big Band, Herbie Hancock, and recorded with Miles Davis, Freddie Hubbard, and Bobby Hutcherson, among many others.