Folsom Street Fair

Folsom Street Fair (FSF) is an annual kink, leather subculture, and alternative sexuality street fair, held in September that concludes San Francisco's "Leather Pride Week". The Folsom Street Fair, sometimes referred to simply as "Folsom", takes place on the last Sunday in September, on Folsom Street between 8th and 13th Streets, in San Francisco's South of Market district.

The event started in 1984, and is California's third-largest single-day, outdoor spectator event and the world's largest leather event and showcase for BDSM products and culture. It has grown as a non-profit charity, and local and national non-profits benefit with all donations at the gates going to charity groups as well as numerous fundraising schemes within the festival including games, beverage booths and even spanking for donations to capitalize on the adult-themed exhibitionism.