Alfred Joel Horford Reynoso (born June 3, 1986) is a Dominican professional basketball player for the Boston Celtics of the National Basketball Association (NBA). Horford is a five-time NBA All-Star and is the highest paid Latin American basketball player. He also represents the Dominican Republic national team.

He played college basketball for the Florida Gators and was the starting center on their back-to-back National Collegiate Athletic Association (NCAA) national championships teams in 2006 and 2007. He was drafted with the third overall pick in the 2007 NBA draft by the Atlanta Hawks, a team he played nine seasons with before signing with the Celtics as a free agent in the 2016 off-season. After playing three seasons with the Celtics, he signed with the 76ers in the 2019 off-season and played a season with the team before being traded in the 2020 off-season to the Thunder.