Pat Califia (born 1954, formerly also known by the last name Califia-Rice) is an American writer of non-fiction essays about sexuality and of erotic fiction and poetry. Califia is a bisexual trans man. Prior to transitioning, he identified as a lesbian and as such, wrote for many years a sex advice column for the gay men's leather magazine Drummer. His writings explore sexuality and gender identity, and have included lesbian erotica and works about BDSM subculture. Califia is a member of the third wave feminism movement.