Joseph Kaye Gill (J. K. Gill) (August 13, 1841 – October 1, 1931) was an American retailer and publisher in the state of Oregon. A native of England, he came to the United States with his parents and settled in Oregon where he managed a bookstore in Salem. Later he entered the business and became the owner of the now-defunct J. K. Gill Company that operated in the Pacific Northwest as a book and office supply store.