Thomas A. Rymer (February 10, 1925 – April 15, 2016) was an American politician and judge. He served in the Maryland House of Delegates, representing Calvert County from 1971 to 1974, District 30A from 1975 to 1982 and District 29A from 1983 to 1988. Rymer also served as judge of the Calvert County Circuit Court from 1987 to 1995 and as state's attorney of Calvert County from 1966 to 1970.