Namesakes
Nobel Prize Winners:
2 physics
(physics) J. J. Thomson 1906 
(physics) George Paget Thomson 1937
Notable Actors and Entertainers:
2 actors
Vivien Merchant (a.k.a. Thomson) 1929-1982
Lily James (a.k.a. Thomson) 1989-
Notable Artists:
1 painter
Tom Thomson 1877-1917
Notable Musicians:
1 composer, 1 musician
Virgil Thomson 1896-1989
Mick Thomson 1973-
Notable Scientists and Inventors:
3 physicists
William Thomson 1824-1907
J. J. Thomson 1856-1940
George Paget Thomson 1892-1975
Notable Writers:
2 authors
Rose Tremain (a.k.a. Thomson) 1943-
Rupert Thomson 1955-
Olympic Medalists:
1 gold, 1 silver
(gold) Earl Thomson 1920 110 m hurdles
(silver) Kirsten Thomson 2000 swimming - 4x200 m freestyle relay
Saints:
1 blessed
Blessed William Thomson 1560-1586