Koop (surname)
Koop is a surname. Notable people with the surname include:
- Aire Koop (born 1957), Estonian actress
 - Arnold Koop (1922–1988), Estonian historian, university rector
 - Bill Koop (1906–1950), Australian rules footballer
 - Doug Koop (born 1960), Australian rules footballer
 - C. Everett Koop (1916–2013), Surgeon General of the United States from 1982 to 1989
 - Volker Koop (1945–2022), German non-fiction author, opinion writer, and freelance journalist
 - Wanda Koop (born 1951), Canadian painter