The Solnan (French: le Solnan) is a 61.6-kilometre (38.3 mi) long river in the Ain and Saône-et-Loire départements, eastern France. Its source is at Verjon, in the Jura Mountains. It flows generally north-northwest. It is a left tributary of the Seille into which it flows at Louhans.Its main tributaries are the Sevron and the Vallière.