Thomas Duff (disambiguation)
# Thomas Duff (disambiguation)

Thomas Duff was an Irish architect.

Thomas Duff may also refer to:

* Thomas Duff (businessman), American businessman
* Thomas Duff (politician) (1870–1949), Australian politician
* Thomas J. Duff, American architect
* Thomas Neil Duff (1896–1978), politician in Ontario, Canada
* Tom Duff (born 1952), Canadian computer programmer
* Tommy Duff (1905–1951), English footballer
