The 2021 season was the 26th in the history of the Major League Soccer club New England Revolution, a professional soccer team based in Foxborough, Massachusetts. The team was under the management of Bruce Arena in his second full MLS season as head coach of the Revs. The regular season began on April 17, 2021. In addition to the league, the Revolution were to compete in the 2021 U.S. Open Cup, before the competition was canceled due to the COVID-19 pandemic.
The 2021 season saw the Revolution win their first Supporters' Shield in club history by having the best record in the regular season. They were eliminated in the conference semifinals of the MLS Cup playoffs after losing to New York City FC in a shootout.