Pieper is a surname. Notable people with the surname include:
Arlene Pieper, who became the first woman to officially finish a marathon in the United States when she finished the Pikes Peak Marathon in Manitou Springs, Colorado, in 1959
August Pieper (disambiguation), multiple people
Cornelia Pieper, German politician of the liberal Free Democratic Party (FDP)
Franz Pieper, Confessional Lutheran theologian
Jens Pieper, German archer
Josef Pieper German Catholic philosopher
Markus Pieper German politician and Member of the European Parliament for North Rhine-Westphalia
Pat Pieper, Chicago Cubs field (public address) announcer
Paul Pieper (disambiguation), multiple people
Roel Pieper, Dutch IT-entrepreneur
Stefan Pieper, German ski jumper
