Ernest John Primeau (September 17, 1909 – June 6, 1989) was an American prelate of the Roman Catholic Church.

[3] On November 27, 1959, Primeau was appointed the sixth bishop of the Diocese of Manchester by Pope John XXIII.

He received his episcopal consecration on February 13, 1960, from Cardinal Albert Meyer, with Bishops Martin McNamara and Raymond Hillinger serving as co-consecrators.

[4] On January 30, 1974, Pope Paul VI accepted Primeau's resignation as bishop of the Diocese of Manchester at age 65.

A woman had complained to Primeau that Landry had been seen having sex with her 13 year-old son at the family's lakeside camp in Milton, New Hampshire.