Marymount Academy is a middle and high school in Greater Sudbury, Ontario, which offers Catholic education for girls in Grades 7 through 12. The school serves between 400 and 600 students. The school originally opened in 1956 as Marymount College, a girls' high school equivalent to the boys-only St. Charles College. Following St. Charles' conversion to a co-educational school in 1993, enrolment at Marymount began to decline, a process that accelerated following the opening of St. Benedict Catholic Secondary School in 1996. The school thus added Grade 7 and 8 education, and developed a special focus on enriched academic education for young women, changing its name to the current Marymount Academy.