Thomas Glen (1796 – April 28, 1887) was a Scottish-born merchant and politician in Newfoundland.
He represented Ferryland in the Newfoundland and Labrador House of Assembly from 1842 to 1848 and from 1855 to 1874.
He was born in Greenock, the son of Alexander Glen, was educated in Scotland and came to Bay Bulls around 1811.
Glen served as receiver general in the Executive Council from 1855 to 1861 and 1869 to 1874.
He retired from politics in 1874 and was named auditor of public accounts, serving in that post until his death in St. John's in 1887.