John Yeon (October 29, 1910 – March 13, 1994) was an American architect in Portland, Oregon, in the mid-twentieth century. He is regarded as one of the early practitioners of the Northwest Regional style of Modernism. Largely self-taught, Yeon’s wide ranging activities encompassed planning, conservation, historic preservation, art collecting, and urban activism. He was a connoisseur of objets d’art as well as landscapes, and one of Oregon’s most gifted architectural designers, even while his output was limited. The family name is pronounced "yee-on", not "yawn".