Colonel Thomas Graham Egerton was a British Army officer in the 77th (East Middlesex) Regiment of Foot during the Crimean War.

During the Battle of Alma in 1854, Egerton, now a Colonel, was ordered by General George Buller to advance with the 77th Regiment to provide support to a brigade further ahead.

[3] During the Battle of Inkerman, Egerton led four companies of the 77th Regiment against an overwhelming Russian force.

[5] During the first wave of the attack, a young Captain Audley Lempriere, who Egerton treated as his own son, was killed during the assault.

[8] His service and death are commemorated in a memorial wall monument at Chester Cathedral that was paid for by his family.