J. Fuller Groom, 88, a real estate broker who had been active in Arlington County planning and other civic affairs, died yesterday at Arlington Hospital after suffering a stroke.

He was chairman of the Arlington Planning Commission in 1961-62. First appointed to the commission in 1953, he retired in 1968. He had been involved in the planning for the vast growth of Rosslyn.

Mr. Groom also had served on the Northern Virginia Regional Planning Commission. As chairman of the Arlington Hall for Arlington Committee, he had led the opposition to plans by the Defense Intelligence Agency to expand its facility on the Arlington Hall tract.

Mr. Groom settled in Arlington after World War II, when he became a real estate broker there. He established the J. Fuller Groom Realty Co. in 1950, and remained in charge of it until the early 1970s. He also was a builder on a small scale.

An active Republican, who had campaigned for Landon in Kansas in the 1930s and for Eisenhower in the 1950s, Mr. Groom had served as chairman of the Arlington County Republican Executive Committee in 195j. He twice ran unsuccessfully (in 1953 and 1955) as a Republican candidate for the Virginia House of Delegates.

Mr. Groom was born in Wilmot, Kan. He moved to Winfield, Kan., as a young man and graduated from Southwestern College there. He then taught school in Kansas, taking time out to serve with the Army in World War I.

He engaged in banking and life insurance in Kansas until World War II, when he served with the Army and then the Army Air Forces in North Africa and Italy. He was awarded the Bronze Star.

Mr. Groom had been a director of the First National Bank of Arlington. He had been active in the Lions Club, both in Kansas and Arlington, for many years. He was a Mason and a member of the American Legion. He belonged to Clarendon United Methodist Church.

He is survived by his wife, Carrie L., of the home in Arlington; four children, Robert L., Theodore R., and Audrey G. Ward, all of Arlington, and Carol C., of McLean, 13 grandchildren and one great-grandchild.

The family suggests that expressions of sympathy be in the form of contributions to the Old Dominion Lions Eye Bank in Richmond, or the American Heart Association.