Frederick Le Gros Clark FRS FRCS (8 February 1811 – 19 July 1892) was a British surgeon.

He was born in Mincing Lane, London, the son of a City merchant.

[1] On 9 September 1841, he married Harriet Ann Willmer at St Marylebone, London.

[2] On 15 June 1858, he married Henrietta Drummond at Tenby, Pembrokeshire, Wales.

[3] He died on 19 July 1892 at his home, The Thorns, Sevenoaks, Kent, England.