Thomas John Hovell-Thurlow-Cumming-Bruce, 5th Baron Thurlow, PC, FRS (5 December 1838 – 12 March 1916), was a British Liberal politician who served as Paymaster General in 1886.

Thurlow assumed in 1873 by royal licence his wife's maiden name of Bruce, and one year later the surname of Cumming as well.

On the death of his elder brother in 1874 he succeeded as 5th Baron Thurlow, which gave him a seat in the House of Lords.

Six years later, in 1880, Lord Thurlow was appointed a Government Whip in the Liberal administration of William Ewart Gladstone.

Lord Thurlow also served as High Commissioner to the General Assembly of the Church of Scotland in 1886.