'''Peyer''' is a surname which may refer to:
* Craig Peyer (born 1950), former California Highway Patrol officer convicted of murdering Cara Knott * Gervase de Peyer (1926–2017), English clarinettist and conductor * Johann Baptist Peyer (c.1678–1733), Austrian organist and composer * Johann Conrad Peyer (1653–1712), Swiss anatomist * Károly Peyer (1881–1956), Hungarian politician * Polly Peyer, retired U.S. Air Force general * Tom Peyer (born 1954), American comic book creator and editor
==See also== * Peyer's patches, aggregated lymphoid nodules named after Johann Conrad Peyer
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