George Albert Hammes (1911–1993), the eighth Roman Catholic Bishop of the Diocese of Superior, Wisconsin from 1960 to 1985
Charles Léon Hammes (1898–1967), a Luxembourgian lawyer, judge and the third President of the European Court of Justice
Hammes Company (or Hammes Co.) is a healthcare consulting firm
Thomas X. Hammes, a retired U.S. Marine officer and specialist in counter-insurgency warfare
Zachary Hammes (born 1984), a right-handed pitcher in Minor League Baseball
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