Kathi Wilcox is an American musician best known as the bassist for the alternative rock band Bikini Kill. Formed in 1990, the band played a significant role in the riot grrrl movement, which combined punk music with feminist themes. Wilcox's energetic playing style and songwriting contributed to the band's influential sound. In addition to her work with Bikini Kill, Kathi Wilcox has been involved in various other musical projects, including The Frumpies and The Julie Ruin. She is recognized for her contributions to the punk and indie rock scenes, advocating for women's rights and social justice through her music.