California State Polytechnic University, Pomona (Cal Poly Pomona) is a public polytechnic research university in Pomona, California, United States. It is the largest of the three polytechnic universities in the California State University system by enrollment.

Cal Poly Pomona began as a southern campus of the California Polytechnic School (now known as Cal Poly San Luis Obispo) in 1938, following the donation of the Voorhis School for Boys and its adjacent farm in San Dimas by Charles and Jerry Voorhis. This Pomona campus expanded in 1949 when it was gifted the W.K. Kellogg Institute of Animal Husbandry from the University of California, which was originally Will Keith Kellogg's horse ranch. Cal Poly Kellogg-Voorhis and Cal Poly San Luis Obispo continued operations under unified administrative control until 1966, when Cal Poly Pomona was formed as an independent university.

Cal Poly Pomona currently offers bachelor's degrees in 94 majors, 39 master's degree programs, 13 teaching credentials, and a doctorate across nine distinct academic colleges. The university is one among a small group of polytechnic universities in the United States which tend to be primarily devoted to the instruction of technical arts and applied sciences. Cal Poly, Pomona is a Hispanic-serving institution (HSI) and is eligible to be designated as an Asian American Native American Pacific Islander serving institution (AANAPISI).

Its sports teams are known as the Cal Poly Pomona Broncos and play in the NCAA Division II as part of the California Collegiate Athletic Association (CCAA). The Broncos sponsor 10 varsity sports and have won 14 NCAA national championships. Current and former Cal Poly Pomona athletes have won 7 Olympic medals (3 gold, 1 silver, and 3 bronze).