John S. Biddison (February 18, 1873 – July 9, 1921) was a politician, lawyer, judge and bank president from Maryland.

He attended public schools in Baltimore County and Sadler's Business College.

Biddison served as a member of the Maryland Senate, representing Baltimore County, from 1904 to 1912.

[1] Biddison became a minority judge of the appeals tax court in April 1920, succeeding Charles Kreuder Jr.

He was one of the founders and served as president of the Overlea Bank from its founding until his death.