John Prentiss Kewley Henshaw (June 13, 1792 – July 20, 1852) was the fourth Bishop of Rhode Island in the Episcopal Church in the United States of America, and the first to hold that position alone.

William Levington, who had established the first African American Episcopal congregation south of the Mason-Dixon line in 1824.

[3] Consecrated on August 11, 1843, by Bishops Thomas Church Brownell, Benjamin Treadwell Onderdonk, and John Henry Hopkins, Rt.

While serving as Rhode Island's bishop, Henshaw was also the rector of Grace Church in Providence, and managed to pay off its mortgage.

Henshaw suffered a fit of apoplexy on July 19, 1852, in Frederick County, Maryland, while substituting for Bishop William Whittingham, who was traveling in Europe.