Pieper is a surname. Notable people with the surname include:
Arlene Pieper, first woman to officially finish a marathon in the US - Pikes Peak Marathon in Manitou Springs, Colorado, 1959 August Pieper (disambiguation), multiple people Bradley G. Pieper (born 1942), American businessman and politician Cornelia Pieper, German politician of the liberal Free Democratic Party (FDP) Franz Pieper, Confessional Lutheran theologian Hein Pieper, Dutch Catholic theologian and politician Jens Pieper, German archer Josef Pieper German Catholic philosopher Kade Pieper (born 2005), American football player Markus Pieper German politician and Member of the European Parliament for North Rhine-Westphalia Michael Pieper (born 1946), Swiss billionaire businessman Pat Pieper, Chicago Cubs field (public address) announcer Paul C. Pieper (born 1972), American guitarist and composer Roel Pieper, Dutch IT-entrepreneur Stefan Pieper, German ski jumper