John Thomas Blue (born February 19, 1966) is a former ice hockey goaltender. He was drafted in the tenth round, 197th overall, by the Winnipeg Jets in the 1986 NHL Entry Draft. He played in the National Hockey League for the Boston Bruins and Buffalo Sabres and was the first Californian goaltender in the history of the National Hockey League.

Blue was born in Huntington Beach, California, then left for Spokane, Washington at age 5. He began ice skating in Spokane, then after his family moved to San Jose where he became youth goaltender for the Santa Clara Blackhawks in Northern California.

Throughout his career, he called Huntington Beach his offseason home. He currently works as a pastor after having become deeply involved in religious studies during his playing days.