John Trần Văn Nhàn[1] (also known as John-Nhan Tran or John Nhàn Trần[2]) (born February 6, 1966) is a Vietnamese-born prelate of the Catholic Church who has been serving as an auxiliary bishop in the Archdiocese of Atlanta in Georgia since 2022.

[5] When Tran was nine, his family fled from Saigon, South Vietnam on a small boat.

Deciding that he wanted to become a priest, he was accepted into the high school program of the Congregation of the Mother of the Redeemer (then called the Congregation of the Mother Co-Redemptrix) in Carthage, Missouri, for the 8th grade in the school year of 1979–1980.

[7] Tran then transferred to a boarding high school in Goshen, New York, operated by the Salesians of Don Bosco.

[Note 1] After Hurricane Katrina in 2005, he celebrated Mass for first responders and other personnel in parking lots and nursing homes.

[9] During his time in New Orleans, Tran served on the priest personnel board and as chair of the presbyteral council.