The Dr. H. A. Longino House is a historic house at 317 West Main Street in Magnolia, Arkansas. The two-story brick structure was built in 1910 for a prominent local doctor, and is one of a small number of surviving designs known to have been created by Eugene C. Seibert, a prominent local architect of the period. When built, it was one of the most imposing houses in the town. It is three bays wide, and is finished in salmon-colored brick, with a terracotta roof. It has a large front porch, which is terminated at one end by a porte-cochere. Stylistically, the house represents a transition between the revival styles of the 19th century and the Craftsman styling which became popular in the following decades.