Buck's Club is a gentlemen's club in London, located at 18 Clifford Street, established in June 1919. P. G. Wodehouse mentions it in some stories and modelled his Drones Club mostly after Buck's. It is probably best known for the Buck's Fizz cocktail, created there in 1921 by its bartender McGarry.

A gentlemen's club is a private social club of a type originally set up by men from Britain's upper classes in the 18th and succeeding centuries.