Fra' Robert Matthew Festing GCStJ OBE TD DL was an English Roman Catholic official who was the Prince and Grand Master of the Sovereign Military Order of Malta from 2008 until his resignation on 28 January 2017, following a dispute with the Vatican.

The Sovereign Military Order of Malta (SMOM), officially the Sovereign Military Hospitaller Order of Saint John of Jerusalem, of Rhodes and of Malta, commonly known as the Order of Malta or Knights of Malta, is a Catholic lay religious order, traditionally of a military, chivalric, and noble nature. Though it possesses no territory, the order is often considered a sovereign entity under international law.