George St Lo, Royal Navy officer and administrator (d. 1718)
George St Lo (sometimes written as St Loe; 19 April 1655 – 20 September 1718) was a British naval officer and politician.

An officer of the Royal Navy who saw service during the Nine Years' War, and the War of the Spanish Succession. His career cut short by injuries, he embarked on a political career, holding offices as a commissioner of the navy and was a Member of Parliament.

St Lo entered on a naval career, and after service in the Mediterranean on several ships, rose to the rank of captain with his own commands. Controversy occasionally followed his career, such as an investigation on murder charges while a lieutenant. He supported the Glorious Revolution in 1688, claiming to have had an important part in its success. His active seagoing career came to an end after 1689, when his ship was captured by French warship and St Lo was wounded. After time in France as a prisoner of war, he returned to England and took up various political positions, while writing about his observations and thoughts on naval administration. Holding administrative posts, and serving as commissioner for some of the dockyards, he was also an extra commissioner for the navy. As commissioner at Plymouth he had an important role in supporting the construction of the first Eddystone Lighthouse, but when he sent the project's guardship away, the crew and the architect, Henry Winstanley, were promptly captured by a French privateer. Though the men were eventually released, perhaps by the personal intervention of Louis XIV of France, St Lo was reprimanded.

St Lo entered parliamentary politics in 1701, sitting for the constituency of Weymouth and Melcombe Regis. He supported the Tory interest, until his defeat in 1705. He continued his administrative career until the accession of King George I in 1716, and was left unemployed in the subsequent redistribution of posts. He died two years later.