Helena M. Geldermann, 61, a former statistician with the National Communicable Disease Center who was active in school and church groups in Bethesda, died of cancer Thursday at the Bethesda Naval Medical Center.

Mrs. Geldermann was born in New York City and graduated from Mount St. Vincent College in Riverdale, N.Y. She married Edward J. Geldermann, then an Army lieutenant and now a retired colonel, and accompanied him to various military posts in this country and to Germany and Japan.

The family established a home in Bethesda in 1952. From 1961 to 1964, Mrs.Geldermann was a statistician at the bureau of disease prevention and environmental control at the National Communicable Disease Center in Bethesda.

She was a member of the Children of Mary Sodality at Stone Ridge Catholic Girls School in Bethesda and of the parish of Our Lady of Lourdes Catholic Church. She also was a member of the West Point Wives Club, Class of 1941.

In addition to her husband, of Bethesda, survivors include three daughters, Barbara Halls, of Olney, Janice Davis, of Haymarket, Va., and Mary Ann Varville, of Medford, Mass.; one son, Edward S., of Bethesda; a brother, John J. McCann, of Belle Harbor, N.Y.; three sisters, Catherine Ingram of Breezy Point, N.Y., Josephine Buzzallino, of Roslyn, N.Y., and Marion Short, of Minneapolis, and four grandchildren.