Thomas Abernethy

Thomas Abernethy may refer to
 * Thomas Abernethy (explorer) (1803–1860), Scottish seafarer, gunner in the Royal Navy, and polar explorer
 * Thomas Perkins Abernethy (1890–1975), American historian of early American history
 * Thomas Abernethy (politician) (1903–1998), American politician
 * Tom Abernethy (born 1954), American professional basketball player