A butler café is a subcategory of cosplay restaurant that originated in Japan. In these cafés, waiters dress as butlers and serve patrons in the manner of domestic servants attending to aristocracy. Butler cafés proliferated in reaction to the popularity of maid cafés and serve as an alternative category of cosplay restaurant intended to appeal to female otaku.

Cosplay restaurants are theme restaurants and pubs that originated in Akihabara, Tokyo, Japan, around the late 1990s and early 2000s. They include maid cafés and butler cafés , where the service staff dress as elegant maids, or as butlers. The staff treat the customers as masters and mistresses in a private home rather than merely as café customers. Such restaurants and cafés have quickly become a staple of Japanese otaku culture.