The Bootham Crescent surface fell victim to the heavy rain and was called off following an early pitch inspection.
A statement on York's official website read: "After a pitch inspection was conducted this morning by match referee Stephen Martin, today's match between the Minstermen and Gillingham has been postponed.
"After heavy rain overnight, the pitch is now waterlogged and deemed unplayable by the match official.
"A new rearranged date for the fixture will be announced later."
