The 2021 Austin FC season was the club's inaugural season in Major League Soccer, the top flight of soccer in the United States. This was also the first season a top-tier sports franchise is playing in the Greater Austin region. Due to the ongoing COVID-19 pandemic, the season began on April 17, 2021, about a month and a half later than normal, and concluded on November 7, 2021. Outside of MLS, Austin FC would have competed in the 2021 U.S. Open Cup, but it was postponed indefinitely in April before being canceled in July.