Walter Henry "Doc" Snell (May 19, 1889 – July 23, 1980) was an American baseball player and coach, college athletics administrator, and mycologist.

He played briefly as a catcher in Major League Baseball with the Boston Red Sox during the 1913 season.

[2] In 1913, he was signed by the Philadelphia Athletics owner Connie Mack, but broke his hand in a game at Brown and was dealt to the Red Sox.

Snell hit a single in his first major league at bat off Cleveland Naps pitcher Nick Cullop on August 1, 1913.

In 1970, he and his wife co-wrote The Boleti of Northeastern North America which was the culmination of his life's work; it contained hundreds of his watercolor illustrations of fungi.