Wennberg is a Swedish surname. Notable people with the surname include:
Alexander Wennberg (born 1994), Swedish ice hockey player Erik Wennberg (1910–1982), Swedish middle-distance runner John Wennberg (born 1934), American medical scientist Lotten Wennberg (1815–1864), Swedish philanthropist Paul Wennberg, American atmospheric scientist Samuel Georg Simeon Wennberg (1836–1908), Norwegian politician
See also Wennerberg