St. Mary's Academy (SMA) is a Catholic, independent day school in the Loretto tradition located in Cherry Hills Village, Colorado.

Founded by the Sisters of Loretto in 1864, St. Mary's Academy educates boys and girls.

St. Mary's Academy High School offers 26 AP courses.

Originally situated at 14th and California Streets on the edge of the prairie, in 1911 the school moved and built next door to Margaret “Molly” Brown on Pennsylvania Avenue.

Needing additional space and recognizing that families were moving to the suburbs, St. Mary's Academy located to its current home in the early 1950s.