Forrest F. Burgess, 69, a retired FBI agent who was active in the affairs of the Mount Vernon Place United Methodist Church, died Sunday at Leland Memorial Hospital in Riverdale following a heart attack.

Mr. Burgess was born in the Herndon section of Fairfax County and grew up there and in Washington. He graduated from Central High School and from George Washington University, where he played basketball. He later attended law school at GW.

While still a student he became a clerk at FBI headquarters. In 1940, he was appointed a special agent. He served briefly in Oklahoma and then was assigned to the FBI Philadelphia field office. He was there from 1941 until 1963.

In the latter year he transferred to the Washington field office and remained there until his retirement in 1973. Mr. Burgess later was a consultant to the Judicial Nominating Committee of the D.C. Superior Courts and also did part-time security work in private industry.

His church work included the chairmanship of the Board of Stewards and the Commission on Evangelism at Mount Vernon Place United Methodist. He also was a member of the pastoral relations, nominating and drama committees. He sang in the choir and was a member of the Rustin Couples Class, a discussion group. At the time of his death, he was a lay member of the church's annual conference.

Mr. Burgess was elected to the George Washington University Hall of Fame in 1977 because of his basket ball skills. He was a member of the Society of Former FBI Agents and a former president of the Central High School Alumni Association.

Survivors include his wife, Mary, of the home in University Park; two sons, Robert F. and John F., both of Greenbelt, and three sisters, Nina Smithers and Alice Huntt, both of Silver Spring, and Elsie Blandford of Washington.