John Michael McNamara (August 12, 1878 – November 26, 1960) was an American clergyman of the Roman Catholic Church.

[1] McNamara was ordained to the priesthood for the Archdiocese of Baltimore by Cardinal James Gibbons on June 21, 1902.

[2] He served as vicar general of the archdiocese, and was named an Assistant at the Pontifical Throne on March 30, 1947.

[1] On November 15, 1947, McNamara was appointed as an auxiliary bishop of the newly erected Archdiocese of Washington.

[1] Throughout his ecclesiastical career, he actively supported the canonization of Mother Elizabeth Ann Seton, and ordained nearly 2,000 men to the priesthood.