General Frederick St John (20 December 1765 – 19 November 1844) was an officer of the British Army and a politician.

[1] He continued to rise through the ranks, becoming a lieutenant-colonel in the 2nd Regiment of Foot in 1791, a colonel in 1795, and being promoted to major-general in 1798.

St John served in Ireland in 1798 as the lieutenant of General Gerard Lake, and followed him to India when he was appointed Commander-in-Chief of the British forces in the colony.

[1] In 1800, St John took passage with his wife, Arabella Craven, on the Queen, which caught fire and was destroyed while in harbour in Salvador.

[3] St John and his wife then joined the East Indiaman Kent to complete the journey.