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