Eugene R. (Gene) Hubbard, 64, a Teamsters Union official in this area for 39 years, died of a heart attack Saturday at Arlington Hospital.

In 1936, Hubbard moved to Washington and went to work for the Chestnut Farms Dairy. Three years later he was elected business agent of Teamster Local No. 246, which represented local milk drivers and dairy employes.In 1640, he was elected secretary and treasurer of the union. The union now represents Metro subway security guards in addition to local dairy workers.

Mr. Hubbard, who planned to retier next June, also was secretary and treasurer of both the Teamster's Joint Council No. 55 here and the Alexandria Central Labor Union.

He was first vice president and a member of the board of the Virginia State Federation of Labor and had served as a delegate to the Greater Washington Central Labor Council and to the Maryland and D.C. Federations of Labor.

In 1957, in an effort to keep the Teamsters Union in the AFL-CIO, Mr. Hubbard openly opposed James R. Hoffa in his successful bid to succeed Dave Beck as Teamster Union president.

Earlier in 1957, he had served as the Washington Central Labor Union's campaign chairman in the fund-raising drive for Sibley Memorial Hospital.

A resident of Arlington, he was active in Virginia Democratic politics and was a former chairman of labor's League for Political Education for Virginia's 8th District.

In 1950, Mr. Hubbard was elected vice president of the National Dairy Conference. He subsequently served as chairman of the Conference for 18 years.

He was born in Bushnell, Fla., and attended the University of Tampa. He served in the Army in Europe during World War II.

He served on the Arlington County Housing Advisory Comittee and the Fairfax County Manpower Advisory Committee. He was a deacon of the First Presbyterian Church in Arlington. In addition, he was a 32nd degree Mason and a member of the Scottish Rite.

Survivors include his wife, Mary, and a son, Michael, of the home address; a son, Robert, of Tucson, Ariz; two daughters, Jane Dunphy, of Silver Spring, and Ann Keegan, also of Arlington; one brother, William Hubbard, of Jacksonville, Fla., and six sisters, Ann Marsh, and Elizabeth Grindstaff, both of Bushell, Ruth Bowness, of Ocoee, Fla., Caroline Woodring, of Concord, Tenn., and Margaret Van De Graff, of Bloomfield, Mich.

The family suggests that expressions of sympathy be in the form of contributions to First Presbyterian Church of Arlington or to the American Heart Association.