The Rialto Theatre is a historic performing venue at 117 East Cedar Street in downtown El Dorado, Arkansas.

Built in 1929 during El Dorado's oil boom years, the theater is one of the best local examples of Classical Revival architecture, and is one of the largest and most elaborately decorated performing spaces in southern Arkansas.

The brick of the front facade is laid in a basketweave pattern, and is topped by a stone frieze, cornice, and parapet.

The theater, which will have floor seating for 850 in addition to a full balcony, will host a variety of musical acts, plays, comedy shows, and movies.

This article about a property in Union County, Arkansas on the National Register of Historic Places is a stub.