John Grimes (December 18, 1852 – July 26, 1922) was an Irish-born prelate of the Roman Catholic Church.

[2] Attached to the Diocese of Albany, New York, in the United States, he was sent by Bishop Francis McNierney to study at the Grand Seminary of Montreal in 1878.

[2] He was ordained to the priesthood in Albany by Bishop Francis McNeirny on February 19, 1882.

[4] He received his episcopal consecration on May 16, 1909, from Archbishop John Farley, with Bishops Patrick Ludden and Thomas Burke serving as co-consecrators.

The funeral was presided over by Patrick Joseph Hayes, Archbishop of New York, during which city courts adjourned for one hour.