Wallich is a surname. Notable people with the surname include:
George Charles Wallich (1815–1899), a marine biologist and medical doctor; son of Nathaniel Wallich
Henry Wallich (1914–1988), a banker and economist
Hermann Wallich (1833–1928), a banker; father of Paul Wallich
Nathaniel Wallich (1786–1854), a botanist and surgeon; father of George Charles Wallich
Wallich's pheasant (a.k.a. cheer pheasant or Catreus wallichii), a bird species named after Nathaniel Wallich
Paul Wallich (1882–1938), a banker; son of Hermann Wallich
