Bay Football Club, commonly known as Bay FC, is a professional women's soccer club representing the San Francisco Bay Area in California, United States. Founded in 2023, the club was established as an expansion franchise in the National Women's Soccer League (NWSL) and began competing in the league during the 2024 season. Bay FC was co-founded by four former United States women's national team players: Brandi Chastain, Leslie Osborne, Danielle Slaton and Aly Wagner. The club's establishment was supported by Sixth Street, a global investment firm whose involvement represented a landmark institutional investment in women's professional sports. Bay FC was created with the ambition of building a leading women's football organisation that combines sporting excellence, commercial growth and meaningful community impact. The club plays its home matches at PayPal Park in San Jose, California, a soccer-specific stadium also used by the San Jose Earthquakes. Its identity represents the wider Bay Area rather than a single city, bringing together supporters and communities from across the region. The club's stated mission is to create an engaging soccer experience that inspires excellence and builds a sense of belonging. Its organisation includes executive leadership, commercial operations, marketing, communications, partnerships, ticketing and dedicated football operations. The football department is responsible for player recruitment, coaching, performance, medical support, analytics and the development of the sporting programme. Bay FC also places importance on building opportunities for women and girls in football and strengthening the connection between professional sport and local communities. Its community-focused work includes initiatives intended to promote participation, leadership, inclusion and access to opportunities for young people. The club's investors and founding group have emphasised the importance of developing a player-led environment and supporting the continued growth of women's professional sports. Bay FC has quickly become part of the expanding landscape of women's professional soccer in the United States. Through its first-team competition, commercial partnerships, supporter engagement and community programmes, the club aims to establish a lasting sporting institution for the Bay Area and contribute to the wider development and visibility of women's football.