Michael John Estok (1939–1989) was a Canadian poet.^[1] He was best known for his posthumous collection A Plague Year Journal, considered one of the crucial works of HIV/AIDS literature in Canada.^[2]

Originally from Moose Jaw, Saskatchewan, Estok studied at the University of Saskatchewan and the University of Toronto.^[3] He taught English literature at the University of Western Ontario, the University of Waterloo and Dalhousie University before joining the Université Sainte-Anne in Pointe-de-l'Église, Nova Scotia, where he taught for 18 years.^[3] He published his first poetry collection, Paradise Garage, in 1987.^[4] He completed A Plague Year Journal shortly before his death of AIDS in 1989,^[3] and the work was published after his death by Arsenal Pulp Press.^[1] His poetry also appeared in Canadian Forum and The Fiddlehead.^[3]

His poems "Ordination", "As the Crisis Deepened" and "Hydrangeas" appeared in John Barton and Billeh Nickerson's 2007 anthology Seminal: The Anthology of Canada's Gay Male Poets.^[2] His poem "Let It Go" was recited in 2012 at The AIDS Quilt Songbook, a benefit concert in New York City staged in conjunction with the NAMES Project AIDS Memorial Quilt.^[5]