Jeffrey Lynn Koons (/ku??nz/; born January 21, 1955) is an American artist recognized for his work dealing with popular culture and his sculptures depicting everyday objects, including balloon animals produced in stainless steel with mirror-finish surfaces. He lives and works in both New York City and his hometown of York, Pennsylvania. His works have sold for substantial sums, including at least two record auction prices for a work by a living artist: US$58.4 million for Balloon Dog (Orange) in 2013 and US$91.1 million for Rabbit in 2019.

Critics are sharply divided in their views of Koons. Some view his work as pioneering and of major art-historical importance. Others dismiss his work as kitsch, crass, and based on cynical self-merchandising. Koons has stated that there are no hidden meanings or critiques in his works.