Rear-Admiral Rafe Grenville Rowley-Conwy, CMG (11 September 1875 – 4 April 1951), was a Royal Navy officer and Lord Lieutenant of Flintshire.
Rowley-Conwy was the second son of Captain Conwy Granville Hercules Rowley (1841–1900), by his wife Marian Harford.
Richard Rowley (1812–1887), an MP for Harwich and a younger son of the 1st Baron Langford.
He never married, and the estate was inherited by his nephew Geoffrey Alexander Rowley-Conwy, who later succeeded a second cousin as Baron Langford.
During the latter part of the First World War, and was appointed captain of the light cruiser HMS Curacoa in 1921.