Dahlström or Dahlstrom is a Swedish surname. The Norwegian version is Dahlstrøm. It derives from the Swedish/Norwegian words dal, which means valley and ström/strøm, which means stream.

People with the surname include:

Alexandra Dahlström (born 1984), Swedish actress André Dahlström (born 1991), Swedish e-sports player Andreas Dahlström (born 1991), Swedish ice hockey player Annica Dahlström (born 1941), Swedish neuroscientist Anton Dahlström (born 1990), Swedish footballer Carl Dahlström (born 1995), Swedish ice hockey player Carl Magnus Dahlström (1805–1875), Finnish merchant and industrialist Cully Dahlstrom (1912–1998), American ice hockey player Daniel O. Dahlstrom (born 1948), American philosopher Donald A. Dahlstrom (1920–2004), American chemical engineer Emma Dahlström (born 1992), Swedish skier Erik Dahlström (1894–1953), Swedish footballer Ernst Dahlström (1846–1924), Finnish businessman and philanthropist Fredrik Dahlström (born 1971), Swedish footballer Gus Dahlström (1906–1989), Swedish actor Gyula Dahlström (1834–1907), Slovak entomologist Harald Dahlstrøm (born 1961), Norwegian musician John Dahlström (born 1997), Swedish ice hockey player Magnus Dahlström (1859–1924), Finnish businessman and philanthropist Malin Dahlström (born 1989), Swedish pole vaulter Nancy Dahlstrom (born 1957), American politician Ole Eskild Dahlstrøm (born 1970), Norwegian ice hockey player Patti Dahlstrom, American singer Robert Dahlstrom (born ca. 1958), American business theorist Robin Dahlstrøm (born 1988), Norwegian ice hockey player Sebastian Dahlström (born 1996), Finnish footballer W. Grant Dahlstrom (1922–2006), American psychologist

See also Dalström