Lewis Rodman Wanamaker was an American businessman and heir to the Wanamaker's department store fortune. In addition to operating stores in Philadelphia, New York City, and Paris, he was a patron of the arts, education, golf, athletics, a Native American scholarship, and of early aviation.

Wanamaker's, originally known as John Wanamaker Department Store, was one of the first department stores in the United States. Founded by John Wanamaker in Philadelphia in 1861, it was influential in the development of the retail industry including as the first store to use price tags.