J. Allen Campbell (?-?) was born and died in an unknown location. He was a student of Mary Baker Eddy's, taking Primary class in March 1885, alongside his wife, Lysbeth L. Campbell. In June 1885, he joined the Christian Scientist Association, but there is no record of him joining the Church of Christ (Scientist). He also took Normal class with Eddy in October of the same year. He was listed in the directory of The Christian Science Journal as a practitioner from 1886 until 1887. He was elected as the first president of the National Christian Scientist Association in January 1886 and the Association's meeting was held at the Campbells' home in New York City on February 10, 1886. J. Allen Campbell's involvement within the Christian Science Movement appears to have ended in January 1889 following his amicable withdrawal from the Christian Scientist Association.

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