Richard F. Ware Jr., 66, a retired official of the Agency for International Development and a former teacher and assistant principal in the D.C. public school system, died Nov. 13 at Alexandria Hospital following a heart attack.

In addition to his work with the city and the federal government, Mr. Ware was a chairman of the board of the National Coalition to Ban Handguns and a member of the Foundation for Handgun Education. He became involved with these organizations after his son, Richard Francis Ware III, was shot to death in 1975 during a holdup at the supermarket in Southeast Washington where he was a supervisor.

Mr. Ware, who lived in Alexandria, was born in Washington. He graduated from the old Dunbar High School and Miner Teachers College. He earned a master's degree at Columbia University and did further graduate work at Catholic, American and George Washington universities.

He began his career in the school system in 1939 as a science and mathematics teacher at Banneker Junior High. From 1950 to 1957, he was assistant principal of Kelly Miller Junior High.

He then joined the International Cooperation Administration, a predecessor to AID, and served in a number of African countries. From 1961 to 1965, he was on loan to the Peace Corps, for which he served in British Honduras, Liberia and Washington. For the next three years, he was the AID representative in Jamaica. He then returned to Washington and was a special assistant in the agency's Technical Assistance Bureau when he retired in 1971.

For the next five years, Mr. Ware was a consultant to AID. from 1977 to 1979, he was head of the Washington office of the South-East Consortium for International Development, which assists foreign students attending colleges in this country.

Mr. Ware was a member of the Master's Swimming Team of the D.C. Department of Education, competing in backstroke and free-style events. He also was a member of the Foundation of the International Association of Torch Clubs, a professional discussion group. He lived in Washington until moving to Alexandria three years ago.

Survivors include his wife, Vernice Fields Ware of Alexandria; three daughters, Lorelle De Freitas of Hyattsville, and Vernice Townsend and Marguerite Turner, both of Washington, and six grandchildren.