Sihler is a surname deriving originally from Germany.
Notable people with the surname include:
Andrew Sihler (born 1941), American linguist and comparative Indo-Europeanist Ernest Gottlieb Sihler (1853–1942), professor of classics at Johns Hopkins University Wilhelm Sihler (1801–1885), German Lutheran minister William W. Sihler (born 1937), professor of business administration at the University of Virginia