Regla Maritza Bell MacKenzie (born 6 July 1970) is a Cuban former volleyball player and three-time Olympian.

While playing for the Cuban women's national volleyball team, she won the gold medal three times at the Olympic Games from 1992 to 2000, and won additional gold medals at the FIVB World Championship in 1994 and 1998.

[3] In 2024, Bell was inducted into the International Volleyball Hall of Fame.

[8] She then played for the Spanish team Fígaro Peluqueros Tenerife for the 2010-11 season.

[9] Bell played for the Indonesian club Monokwari Valeria during the 2012–13 season of the Indonesian volleyball league,[5] and later signed up for a two-month contract with PLDT HOME TVolution, a Philippine volleyball team that participated at the 2014 Asian Women's Club Volleyball Championship.