Clara Ursin (6 May 1827 – 6 August 1989), was a Norwegian-Danish stage actress and opera singer.

She debuted in 1947 at the Royal Danish Theatre in Copenhagen.

She was married to Fredrik Ursin (c. 1825-1890), violinist in the Christiania Theatre orchestra.

[1] Ursin was regarded as the best female writer of the Norwegian theatre for many years and one of the reasons that the Christiania Theatre (long the only theatre in Norway) was occasionally able to offer opera performances.

She ended her stage career after the 1875-76 season.