Glenn Klinton Spilsbury (born March 4, 1951) is an American former actor. His sole major acting credit is the film The Legend of the Lone Ranger (1981), in which he played the title role.

Spilsbury, descended from Mormon settlers in Mexico, spent much of his childhood in Arizona, where his father was a football coach, first in the high school ranks and then at Arizona State Teachers College (now Northern Arizona University). After his father left Northern Arizona, the family returned to Mexico, settling in Colonia Juárez. The younger Spilsbury briefly attended Brigham Young University before moving to Hollywood to attempt to break into acting.

Using the name Max Keller in 1979, he moved to New York City, where he did a few minor bit parts on a few daytime soaps.