A Soldier on Horseback is a c. 1616 painting by Flemish painter Anthony van Dyck.

[1] The painting was part of the collection of John Guise, a British army officer.

Upon his death in 1765, he bequeathed this painting with his entire collection to Christ Church, Oxford, his alma mater.

The painting was stolen by burglars who managed to gain access to the gallery on 14 March 2020.

Stolen alongside Van Dyck's painting were Salvator Rosa's A Rocky Coast, with Soldiers Studying a Plan and Annibale Carracci's A Boy Drinking.