John Crull, 84, retired executive vice president of the Communications Workers of America, died of pneumonia and kidney failure Oct. 2 at Montgomery General Hospital.

Mr. Crull, a resident of Silver Spring, retired from the CWA in 1967 after having served 20 years at the union's headquarters in Washington.

He was born in Genesco, Ill., and raised in Kansas. He began his union activities while working at the telephone company in Wichita in 1936.

In 1937 he was elected vice chairman of the Wichita local of the old Southwestern Telephone Workers Union. Later he became chairman of the local and division chairman for the Southern Kansas division of the Western Missouri and Kansas area.

Mr. Crull was head of the bargaining committee that negotiated the first contract covering all Southwestern Bell workers in 1941, and he was chairman of the committee that drafted the CWA's first constitution in 1946.

He was elected vice president of the national union at its founding convention in 1947 and moved to Washington that year.

Survivors include his wife, Ethel, and a son, John Jr., both of Silver Spring; a daughter, Norma L. Rigler of Wartrace, Tenn.; four grandchildren, and four great-grandchildren.