腐女，全称腐女子（日语：腐女子／ふじょし），主要是指喜欢BL，也就是喜欢***情的女性。

「腐女子」一词源自于日语，是由同音的「妇女子（ふじょし）」转化而来，为喜爱BL的女性自嘲的用语。腐女子的「腐」字在日文有无可救药的意思，而腐女子是专门指称对于***情（BL系）作品情有独钟的女性，通常是喜欢此类作品的女性之间彼此自嘲的讲法；非此族群以「腐女子」称呼这些女性时，则是带有贬低、蔑视意味的词汇。在日本一些地方，直接称呼对方为“腐女”是不礼貌的事情。

Yaoi fandom refers to readers of yaoi (also called Boys' Love, BL), a genre of male-male romance narratives aimed at those who participate in communal activities organized around yaoi, such as attending conventions, maintaining or posting to fansites, creating fanfiction or fanart, etc. Most fans are teenage girls or young women. In the mid-1990s, estimates of the size of the Japanese yaoi fandom were at 100,000-500,000 people, but in 2008, despite increased knowledge of the genre among the general public, readership remains limited. In Japan, female fans are called fujoshi, a pun which denotes their way of seeing homosexual relationships in media as being "rotten". English-language fan translations of From Eroica with Love circulated through the slash fiction community in the 1980s, forging a link between slash fiction fandom and Yaoi fandom.