Frederick Horsman Varley Art Gallery is an art gallery in Markham, Ontario, Canada. It is named after Frederick Varley, an artist from the Group of Seven. The gallery is located on Main Street in Unionville. The gallery, which spans 13,935 m2 and includes over a hundred pieces by Frederick Varley opened in May 1977. The gallery features a frequent changing of displays of the artwork done by local, national, and international artists.