Minnie Oxenburg, 94, a leader in local Jewish affairs who was honored for her work with the Jewish Community Center and the Hebrew Academy of Greater Washington, died of cardiac arrest Tuesday at her Washington home.

Mrs. Oxenburg was a former member of the National Council of Christians and Jews and the National Council of Jewish Women. She was one of the organizers of the Women's Chapter of the Washington B'nai B'rith and served as president of the auxiliary of the Hebrew Home of Greater Washington in 1927-30. She was a longtime member of the Home's board. She also was a former president of Hadassah of Greater Washington and a former chairman of the Hadassah's Constitution Committee.

In 1932, Mrs. Oxenburg was elected to the Board of the Jewish Community Center of Washington, which honored her in 1959 for her contributions to the growth and development of the Center and for her years of devoted service. She was made an honorary life member of the Center's Board of Directors at that time.

She was a member of Adas Israel Congregation here for more than 70 years and was a former officer of the Congregation's Sisterhood. A former concert singer, she was a longtime member of the Congregation's choir.

In 1959, she and her late husband, Henry, a Washington merchant and builder, were awarded a golden certificate for more than 50 years of service to the Congregation. Mr. Oxenburg died in 1970.

Mrs. Oxenburg, who served on the board of education of the Hebrew Academy for many years, was honored at the first Hebrew Academy Awards Luncheon in 1968 for her work for the Academy's library and community.

Born in Alliance, N.J., she graduated from teacher's college there and taught school before her marriage in 1907, at which time she moved to Washington.

Survivors include two daughters, Margaret Deitz of Hyattsville, and Beatrice Abramson of Washington; a sister, Naomi Oshinsky of Washington; a brother, Theodore Opack of Bethesda, four grandchildren and 11 great-grandchildren. A son, Gerald I. Oxenburg, preceded her in death.

The family suggests that expressions of sympathy be in the form of contributions to the Gerald I. Oxenburg Memorial Library of the Hebrew Academy of Greater Washington in Silver Spring.