The 2020 San Antonio FC season was the club's fifth season of existence. Including the San Antonio Thunder of the original NASL and the former San Antonio Scorpions of the modern NASL, it was the 11th season of professional soccer in San Antonio. The club played in the USL Championship, the second division of the United States soccer league system, and were scheduled to participate in the U.S. Open Cup before it was postponed and ultimately cancelled due to the COVID-19 pandemic. This was the first season without Darren Powell as head coach. Former assistant coach Alen Marcina was named head coach on December 9, 2019.