Louis K. Meisel (born 1942 in Brooklyn, New York) is an American author, art dealer and proponent of the photorealist art movement, having coined the term in 1969. He is the owner of one of the earliest art galleries in SoHo, at 141 Prince Street. Meisel is also an important collector of pin-up art.
Meisel has authored numerous books on the topic of photorealism and pin-up art, and has contributed to dozens of art magazines. He is a member of the Authors Guild.
Meisel is the Vice Chairman of the Board of the Concert Artists Guild. In the early 2010s he initiated the Salon Series at the Parrish Art Museum in Water Mill, New York, which presents around forty classical music concerts per year.