Koopmans is a Dutch occupational surname meaning "merchant's". Notable people with the surname include: Aart Koopmans (1946–2007), Dutch businessman Ger Koopmans (born 1962), Dutch CDA politician Leo Koopmans (born 1953), Dutch ice hockey player Luuk Koopmans (born 1993), Dutch football goalkeeper Marion Koopmans (born 1956), Dutch virologist Rachel Koopmans, Canadian historian Rudy Koopmans (born 1948), Dutch boxer Ruud Koopmans (born 1961), Dutch sociologist Thijmen Koopmans (1929–2015), Dutch judge Tini Koopmans (1912–1981), Dutch high jumper, discus thrower and shot putter Tjalling Koopmans (1910–1985), Dutch American mathematician, physicist and economist and Nobel Laureate Koopmans' theorem, a quantum chemistry theorem published by Tjalling Koopmans See also Koopman References Dutch-language surnames Occupational surnames