The Usui Pass Railway Heritage Park is an open-air railway museum located in Annaka, Gunma, Japan. It is operated by Usui Pass Exchange Memorial Foundation, and was opened on 18 April 1998 on the site of the former Yokokawa motive power depot alongside the Shin'etsu Main Line, of which the section between Yokokawa station and Karuizawa station was discontinued on 1 October 1997.