St. Mary's Episcopal Church, Carpenter Gothic church in Green Cove Springs, Florida, United States

St. Mary's Episcopal Church is a Carpenter Gothic church at 400 St. Johns Avenue in Green Cove Springs, Florida. The wooden building stands on 3-foot-high piers about 40 feet from the St. Johns River. Its 18 stained-glass Lancet windows on the east and west sides came from Colgate Studio in New York City.

St. Mary's was organized in 1878 as a mission church of the Episcopal Diocese of Florida, after a Boston winter resident asked Bishop John Freeman Young for a chapel. Winter visitors and residents raised over $1,000 to build it on a donated lot valued at $500. The first service was held on March 10, 1879, and the church was added to the National Register of Historic Places on February 17, 1978.

St. Mary's was founded in 1878 as a mission church of the Episcopal Diocese of Florida, after a Boston woman who wintered in Green Cove Springs asked Bishop John Freeman Young for a chapel serving seasonal guests. Winter visitors and residents together raised over $1,000 for the building. The name honors St. Mary, whose virtues of faith, charity and hope appear as three women in the altar windows.

The church stands at 400 St. Johns Avenue in Green Cove Springs, on 3-foot-high piers about 40 feet from the St. Johns River. Visitors approach from St. Johns Avenue; the raised floor and riverside setting are visible from outside. Check current opening times before travelling, as access depends on the parish.

The stained-glass windows were made by Henry E. Sharp for Colgate Studio of New York City and cost $1,100 when the church was built; they rank among the earliest American-designed and manufactured stained glass in Florida. Behind the altar, three women represent faith, charity and hope, and the angel Gabriel sits at the centre of the rose window.