The 2021 Houston Dash season was the team's eighth season as an American professional women's soccer team in the National Women's Soccer League (NWSL). The 2021 NWSL season returned as a full league season after COVID-19 caused the 2020 NWSL season to be limited to the 2020 NWSL Challenge Cup and Fall Series. The NWSL continued to showcase the Challenge Cup in 2021, prior to a full league season starting in late April.