Boston is home to several professional sports teams. The most notable ones include:

1. Boston Celtics: This is a professional basketball team playing in the National Basketball Association (NBA). They have won the most championships in NBA history.

3. Boston Bruins: This is a professional ice hockey team playing in the National Hockey League (NHL). They have also won several Stanley Cup championships.

4. New England Patriots: Although they are technically based in Foxborough, Massachusetts, which is part of the Greater Boston area, this is a professional American football team playing in the National Football League (NFL). They have won multiple Super Bowl championships.