Douglas or Doug Clark may refer to:

• Douglas Clark (poet) (1942–2010), English poet
• Douglas Clark (sculptor), American sculptor
• Doug Clark (died 2002), leader of Doug Clark and the Hot Nuts

• Doug Clark (Arizona politician), American politician
• Doug Clark (Australian politician) (1927–2008)

• Douglas Clark (rugby league) (1891–1951), British rugby league footballer, wrestler and World War One veteran
• Doug Clark (baseball) (born 1976), American baseball player

• Doug Clark (serial killer) (1948–2023), American serial killer
• Doug Clark (investor), American real estate investor
• Douglas Alan Clark (1917–2012), American recipient of the Navy Cross
• Douglas S. Clark (born 1957), American chemical engineer

• Douglas Clarke (disambiguation)