Thomas Johns Perry (February 17, 1807 – June 27, 1871) was an American politician.
He was admitted to the bar in 1828 and commenced practice in Cumberland soon thereafter.
He served as a member of the Maryland House of Delegates from 1834 to 1836 and was elected as a Democrat to the Twenty-ninth United States Congress, serving from March 4, 1845, to March 3, 1847.
After Congress, Perry served as associate judge of the sixth judicial district of Maryland from 1851 to 1861 and again from 1864 to 1871.
He died in Cumberland at the age of 64, and is interred in Rose Hill Cemetery.