Philip Francis Thomas (12 September 1810 – 2 October 1890) was an American lawyer and politician. He served in the Maryland House of Delegates and was the 28th governor of Maryland from 1848 to 1851. In 1860, he was appointed as the 23rd United States secretary of the treasury, in President James Buchanan's administration. He held the post for only one month, resigning after he failed to obtain a loan to pay the interest on the bonded public debt. After unsuccessfully standing for election to the United States Senate in 1878, he returned to the Maryland House of Delegates and later resumed the practice of law.Engraving credit: Bureau of Engraving and Printing; restored by Andrew Shiva