Marcela Paz Vacarezza Etcheverry (born 8 May 1970 in Antofagasta) is a Chilean television presenter and psychologist. She is married to the TV presenter Rafael Araneda with whom she has three children, Martina, Florencia and Vicente.
Marcela is daughter of hematologist Ricardo Vacarezza Yávar, and the younger sister of actress Adriana Vacarezza. In 1992, Marcela won Miss Chile pageant contest and in the same year she started her television career. After taking a maternity leave, she returned on TV as hostess for En Portada until 2005. Currently, Marcela is part of the television show .