Arthur Buckminster Fuller (August 10, 1822 – December 11, 1862) was a Unitarian clergyman of the United States.

For some years, he was a teacher and missionary in Illinois, after which he held pastorates in Manchester, New Hampshire (1848–1853), Boston (new North Church; 1853–1859) and Watertown, Massachusetts (until 1861).

In the American Civil War, he became chaplain to the Sixteenth Massachusetts Volunteer Infantry on August 1, 1861.

[1] He was honorably discharged on December 10, 1862, on account of failing health.

On the day following his discharge, being present at the Battle of Fredericksburg, he volunteered to join the Nineteenth Massachusetts in crossing the Rappahannock River and was shot to death while attempting to drive the Confederate sharpshooters out of the city.