Ken Marcus (born October 2, 1946) is an American Photographer, best known for his glamour photography with Penthouse and Playboy magazines. For over 40 years he has produced hundreds of centerfolds, editorials, album covers, and advertisements. His work is shown in galleries, published in books and magazines. He was chosen as Artist-In-Residence at the Yosemite National Park Museum. For many years, Marcus has lectured and produced professional workshops in the US and Internationally.