Thomas Duncan
Thomas Duncan is the name of the following people:
- Thomas Duncan (painter) (1807-1845) Scottish painter
- Thomas Duncan (General) (1819–1887), American general
- Thomas Duncan (mathematician) (1777-1858) Scottish mathematician
- Thomas Duncan (politician, † 1910) († 1910), Scottish-Canadian politician
- Thomas Elmer Duncan (1911-1967), American singer, see Tommy Duncan
- Thomas G. Duncan , British Anglicist
- Thomas Young Duncan (1836–1914), New Zealand politician
- Thomas William Duncan (1905–1987), American writer
