Beatriz Cruz Nazario (born June 15, 1980) is a female track and field athlete, who competes in the sprints events. She represented her native country at the 2000 Summer Olympics, where she was eliminated in the first round of the women's 4x400 metres relay competition, alongside Militza Castro, Sandra Moya and Maritza Salas. Cruz ran the third leg in the heat 2 race.