Walter Decoster Dennis, Jr. (August 23, 1932 – March 30, 2003) was a suffragan bishop of the Episcopal Diocese of New York, from 1979 to 1998.

He studied at the Virginia State College, from where he graduated with a Bachelor of Arts in 1952.

[2] He then studied at the New York University and graduated with a Master of Arts in North American history and constitutional law in 1953.

[5] During his time at the cathedral, he was ordained priest in June 1958 by Bishop Horace W. B. Donegan of New York.

[7] He was consecrated at the Cathedral of St. John the Divine on October 6, 1979, by Bishop Paul Moore Jr. of New York.