John's, Newfoundland and Labrador) is a Canadian science-fiction author.
His best-known works include The Equations Novels and the Defense Command series.
He is the son of fellow Canadian author Jacqui Tam.
He is a graduate student at Wilfrid Laurier University, in Waterloo, Ontario.
Tam has been an author guest at the Polaris Science Fiction Convention for six consecutive years, and a guest at the Sci-Fi on the Rock convention for its first three years.