Oak Glen is a historic house at 745 Union Street in Portsmouth, Rhode Island.

It is a 2+1⁄2-story wood-frame structure, with a highly pitched gambrel roof and jerkin-headed (clipped) gable ends.

The ell attached to the rear of the house is a c. 1850 cottage which was standing on the site when the Howes purchased the property.

After Samuel Howe died in 1876, Julia (best known as the author of "The Battle Hymn of the Republic") made this her permanent home.

This article about a Registered Historic Place in Newport County, Rhode Island is a stub.