Namesakes
British Prime Ministers:
1 prime minister
Alec Douglas-Home 1963-1964 
Fictional Characters from Plays and Musicals:
1 character
Jeff Douglas 1947 Brigadoon
Notable Actors and Actresses:
3 actors, 1 actress
Melvyn Douglas 1901-1981
Kirk Douglas 1916-2020
Michael Douglas 1944-
Illeana Douglas 1965-
Notable Athletes:
1 football, 1 rugby
(rugby) Kane Douglas 1989-
(football) Jamil Douglas 1992-
Notable Musicians:
1 singer
Ashanti (a.k.a. Douglas) 1980- R&B
Olympic Medalists:
2 bronze, 2 gold
(bronze) Herb Douglas 1948 long jump
(bronze) Sandra Douglas 1992 4x400 m relay
(gold) Rowley Douglas 2000 rowing
(gold) Gabrielle Douglas 2012 artistic gymnastics
Oscar Award Winners:
2 actors
(actor) Melvyn Douglas 1963; 1979 Hud; Being There
(actor) Michael Douglas 1987 Wall Street
Saints:
1 blessed
Blessed George Douglas ?-1587