In the Jeeves and Wooster stories by P. G. Wodehouse, the Junior Ganymede is the club for gentleman's gentleman, especially for those whose gentlemen are members of the Drones Club. The name comes from Ganymede, who was the cup-bearer of Jupiter. Jeeves (Bertie Wooster's valet in the series) is a member of this club, as is Brinkley.

One of the rules of this club is that its members are required to write embarressing information about their employers in the Junior Ganymede Club Book. While members are obviously supposed to keep this information in strict confidence, Jeeves has used it on occasion to help his employer.