Christopher Wesson Bosh (born March 24, 1984) is an American professional basketball player in the NBA who plays for the Toronto Raptors.

Garnering an array of basketball accolades since his high school days, the power forward left college after one season to enter the 2003 NBA Draft. He was selected fourth overall by the Raptors in a very competitive draft class. Since his NBA career began Bosh has emerged as one of the most established young stars in the league. In the process, he has become a four-time NBA All-Star, been named to the All-NBA team, appeared for the US national team (with whom he won a gold medal at the 2008 Olympics), and taken over former fan-favorite Vince Carter as the face and leader of the Raptors franchise. In the 2006–07 season, Bosh led the Raptors to their first NBA Playoffs berth in five years, and their first ever division title. He is Toronto's all-time leader in rebounds, blocks, double doubles, free throws made and attempted, and minutes played.

Owing to his initials and jersey number, Bosh is nicknamed "CB4", a name first coined by former Toronto Raptors play-by-play commentator Chuck Swirsky. Off the court, Bosh is noted for his philanthropy and active community service. In recognition of his own childhood experience, Bosh set up the Chris Bosh Foundation to help promote sports and education amongst youths in Dallas and Toronto, and regularly speaks to youths about the benefits of reading.