Dalgarno is a surname. Notable people with the surname include:
Alexander Dalgarno (1928–2015), British physicist and astronomer Anne Dalgarno (1909–1980), Australian politician Brad Dalgarno (born 1967), Canadian ice hockey player George Dalgarno (1616–1687), Scottish linguist Joel Dalgarno (born 1987), Canadian lacrosse player Lynn Dalgarno (born 1935), Australian geneticist Roy Dalgarno (1910–2001), Australian artist
See also 6941 Dalgarno, main-belt asteroid Shine-Dalgarno sequence, named for co-discoverer Lynn Dalgarno Dalgarno v Hannah, court case Dalgarno (ward), electoral ward in London, England