Thomas Aitchison-Denman, 2nd Baron Denman (30 July 1805 – 9 August 1894), was a British aristocrat and politician.
His father was made Attorney General in 1830, and in 1834 became Lord Chief Justice and was raised to the peerage as Baron Denman.
His grandfather was the obstetrician Dr Thomas Denman, and his brothers George and Joseph were a High Court judge and admiral, respectively.
His pet projects included women's suffrage and the introduction of a time limit on speeches; he introduced multiple bills for each, but none even got to a second reading.
He died at Berwick-upon-Tweed at the age of 89, and was succeeded in the barony by his 19-year-old grandnephew Thomas Denman – a future Governor-General of Australia.