Constantine John Phipps, 2nd Baron Mulgrave, PC (19 May 1744 – 10 October 1792) was an English explorer and officer in the Royal Navy. He served during the Seven Years' War and the American War of Independence, seeing action in a number of battles and engagements. Inheriting a title, he also went on to have a successful career in Parliament, and occupied a number of political offices during his later years.