John Francis Allen Jr. (August 23, 1900 – July 20, 1988), nicknamed "Hap", was an American Negro league infielder in the 1920s.

A native of Pittsburgh, Pennsylvania, Allen made his Negro leagues debut in 1921 with the Pittsburgh Keystones and played for the Homestead Grays the following season.

[1][2] He died in Pittsburgh in 1988 at age 87.

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