Andrea Erminia Constand was born on April 11, 1973 in Toronto and played basketball at Albert Campbell Collegiate Institute in the city. After high school, Constand earned a scholarship to play basketball at the University of Arizona. Constand averaged 10 points per game in her senior season and helped the Wildcats win the NIT, and later pursued a career as a professional basketball player in Europe. She also played for Canada at the 1997 Summer Universiade.