The 2021–22 Ottawa Senators season was the 30th season of the Ottawa Senators of the National Hockey League (NHL). The Senators attempted to return to the Stanley Cup playoffs after failing to qualify for the past four seasons. The Senators returned to the Atlantic Division after playing in the North Division in 2020–21. On April 6, 2022, the Senators were eliminated from playoff contention when the Washington Capitals defeated the Tampa Bay Lightning.