Bay Football Club is an American professional soccer team based in the San Francisco Bay Area that competes in the National Women's Soccer League (NWSL). The team began play in the NWSL as an expansion team in the 2024 season. Their home stadium is PayPal Park in San Jose, California, a soccer-specific stadium with 18,000 seats that is also home to the San Jose Earthquakes of Major League Soccer (MLS).

The ownership group, which is led by investment firm Sixth Street Partners and four former United States women's national team players, was awarded an expansion franchise on April 4, 2023. It is the first women's professional soccer team based in the Bay Area since the San Jose CyberRays and FC Gold Pride, who both played in previous leagues. Sixth Street CEO Alan Waxman and former national team player Aly Wagner were named the club's co-chairpersons. The team's name, Bay FC, and logo were announced on June 1, 2023.