Mae Fortune Barber, 84, a Presbyterian missionary and teacher for more than 50 years until her retirement in 1973, died Sunday at Howard University Hospital of renal failure.

A native of Georgia, Mrs. Barber had worked as a traveling Sunday school missionary for the church throughout Georgia and South Carolina before her marriage in 1923 to the Rev. Jesse B. Barber Sr., a Presbyterian minister.

She accompained her husband to ministerial posts in Chattanooga, Tenn., where she was a teacher and principal at Newton Normal Institute, and to Lincoln University in Pennsylvania, where Mr. Barber was dean of the Theological Seminary.

In 1948, Mrs. Barber accompained her husband to his last assignment as assistant pastor at the Siloam Presbyterian Church in Brooklyn, N.Y., where she continued her church work.

After their retirement in 1973, Mr. and Mrs. Barber came here to live with their son, Dr. Jesse B. Barber Jr., a neurosurgeon at Howard University Hospital.

Mrs. Barber grew up in Rome, Ga. She attended Atlanta University in Georgia and Scotia Seminary in Concord, N.C. In 1944, she graduated with honors from Tennessee Agricultural & Industrial State University at Nashville.

In addition to her husband and son, of the home in Washington, she is survived by four grandchildren.