John Machacek (February 18, 1940 – July 24, 2020) was an American reporter.

Machacek was born in Cedar Rapids, Iowa. Working for The Times-Union of Rochester, New York, in 1971, he and Richard Cooper covered the Attica Prison riot. Their reporting was recognized with the 1972 Pulitzer Prize for Spot Reporting."Local General or Spot News Reporting". The Pulitzer Prizes. Retrieved 28 October 2013.

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