Hartig is a German surname. Notable people with the surname include:
Hartig Drug, a chain of pharmacy retail stores based out of Dubuque, Iowa
Friedrich Hartig (1900–1980), an Italian entomologist who specialised in Lepidoptera
Georg Ludwig Hartig (1764–1837), a German agriculturist and writer on forestry
Heinz Friedrich Hartig (1907–1969), a German composer and harpsichordist
Lukáš Hartig (born 1976), a Czech football player
Robert Hartig (1839–1901), a German forestry scientist and mycologist, son of Theodor
Theodor Hartig (1805–1880), a German forestry scientist and zoologist, son of Georg Ludwig
