The Dixon County Courthouse in Ponca, Nebraska was built in 1883–84 and expanded in 1939–1940. It was listed on the National Register of Historic Places in 1990.
The original courthouse has elements of Italianate architecture. The addition was designed by Lincoln architect J.F. Reynolds and is in Art Deco style.
It is a contributing property in the NRHP-listed Ponca Historic District.
The construction of the addition was the last salvo in a war between Ponca and Allen, Nebraska about which town would be county seat.