Hert or De Hert is a surname. Notable people with the surname include:
Alvin Tobias Hert (1865–1921), Americal politician Andriy Hert (born 1994), Ukrainian footballer Robbe De Hert (1942–2020), Belgian film director Sallie Aley Hert (1863–1948), Americal politician Tami Hert, American singer
See also Jiří Heřt (1928–2014), Czech anatomist and researcher