Robert MacCarty, Viscount Muskerry (1698 – 19 September 1769) was an Irish officer of the Royal Navy and a colonial administrator.
His father was attainted in 1691 after serving in the Jacobite Irish Army of the Catholic James II, with his titles forfeited, and Muskerry was never allowed to succeed in the earldom.
From 1733 to 1734, he served as Commodore Governor of Newfoundland, becoming the first Irishman to hold this post.
[2] In 1741 he resigned his commission in order to join the Jacobites and moved to the exiled Stuart court at Château de Saint-Germain-en-Laye.
Muskerry married Joanna, daughter of Henry Player, in 1722 firstly.