Greulich is a surname of German origin. Notable people with the surname include:
Augustus Greulich (1813-1893), German-born American politician Bernhard Greulich (1902–1995), German athlete Billy Greulich (born 1991), British footballer Helmut Greulich (1923-1993), German politician (SPD) Hermann Greulich (1842-1925), Swiss politician
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