Pitzer is a surname, and may refer to:
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Alexander White Pitzer (1834–1927), American Presbyterian clergyman
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Gys Pitzer (1939–2025), South African rugby union player
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Kenneth Sanborn Pitzer (1914–1997), American theoretical chemist
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Russell Kelly Pitzer (1878–1978), American businessman and philanthropist
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Russell Mosher Pitzer (1938–), American theoretical chemist
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William Bruce Pitzer (1917–1966), American Naval officer
See also
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Pitzer College, liberal arts college located in Claremont, California, United States, named after Russell K. Pitzer
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Pitzer equations, thermodynamic equations named after Kenneth S. Pitzer
