Thomas Mahon may refer to:
*
Thomas Mahon (Irish MP) (1701–1782), MP for
County Roscommon
County Roscommon () is a Counties of Ireland, county in Republic of Ireland, Ireland. It is part of the province of Connacht and the Northern and Western Region. It is the List of Irish counties by area, 11th largest Irish county by area and Li ...
*
Thomas Mahon, 2nd Baron Hartland (1766–1835), MP for County Roscommon, grandson of the above
*
Thomas Mahon (tailor), English tailor and weblogger
*
Thomas J. Mahon, American politician and jurist
{{hndis, Mahon, Thomas