Barry Long was an Australian spiritual teacher and writer.

Born and raised in Australia with little formal education, by his twenties, Long, married with two children, was an editor of a Sunday newspaper and press secretary in the New South Wales Parliament. By his early thirties he began to experience a disillusionment with his material life and in 1964 he abandoned everything and went to India. There he experienced a spiritual crisis culminating in a mystic death, which he called his "realisation of immortality," followed four years later by a "transcendental realisation"; a contact with a depth of consciousness from which his knowledge of universal reality ultimately derived.