Rodney Desborough Slater (born 8 November 1941 in Crowland, Lincolnshire) is a member of the Bonzo Dog Doo-Dah Band, playing saxophones and other musical instruments (particularly winds).

At the time, Slater was already playing in a traditional jazz band at college with Parkinson on sousaphone, and Chris Jennings on trombone.

He was a core member of the band, and performed on their top five hit "I'm the Urban Spaceman" and on all subsequent recordings except 1972's Let's Make Up And Be Friendly.

The Bonzo Dog Doo-Dah Band appeared in the Beatles' 1967 TV film Magical Mystery Tour and also in the ground-breaking ITV television series Do Not Adjust Your Set, which featured future Monty Python members Eric Idle, Terry Jones and Michael Palin.

In August 2017 Rodney Slater's Parrots released his debut album Parrotopia!, which contained music, dialogue and recitations.