Thomas C. Marshall (December 14, 1851 – April 23, 1911) was a pioneer, lawyer, judge, and the 3rd Mayor of Missoula, Montana.

During this time on April 13, 1885, he was elected the 3rd mayor of Missoula, but he would resign four months later on August 6.

[2] After the dissolution of Woody and Marshall, Marshall became the lawyer of Andrew B. Hammond-controlled properties such as the Missoula Mercantile Company, First National Bank of Missoula, and the Big Blackfoot Milling Company.

[3] He would later serve as director of the bank and Vice-President of Hammond's South Missoula Land Company.

He died April 23, 1911, in Fargo, North Dakota, en route to seeing a medical specialist.