Rudolph Thomas Harrell, 83, retired president of the American Home Mutual Life Insurance Co. and the Harrell Bros. & Campbell Insurance Co., died of pneumonia Friday at Georgetown University Hospital.

Mr. Harrell joined American Home Mutual in 1913, five years after it was founded by his father, John B. Harrell.

He later became president of American Home Mutual and of Harrell Bros. & Campbell, a firm he founded. Both companies eventually were absorbed by other insurance firms.

Mr. Harrell was honored by American Home Mutual Colleagues in 1963 for 50 years of service. He retired about 1970.

He was born in Virginia and came here with his family as a boy. He lived in Washington for nearly 70 years before moving to the Bethesda Retirement and Nursing Center about two years ago.

He was a veteran of World War I, a master Mason, a life member of the Columbia Country Club in Chevy Chase and a member of the American Legion.

He founded the February Golfers Group about 40 years ago.

His wife, Kilda, a former director of Harrell Bros. & Campbell, died in 1977.

Survivors include a daughter, Betty Weiblinger, of Silver Spring; two sons, Thomas M., of Newtown Square, Pa., and Robert M., of Bethesda, seven grandchildren and six great-grandchildren.