Leopold I (F930) is a Karel Doorman-class frigate of the Marine Component of the Belgian Armed Forces. Prior to 29 March 2007, the ship was known as HNLMS Karel Doorman (F827). It is one of the two frigates of this class purchased from the Royal Netherlands Navy on 22 December 2005.

The Karel Doorman-class frigates are a series of eight multi-purpose vessels built for the Royal Netherlands Navy. Its namesake is Karel Doorman, a Dutch naval officer whose ship was struck by a Japanese torpedo in the battle of the Java Sea in 1942, and who, as a result of which, went down with his ship.