Nellie Tyler Rayner, 90, a volunteer and administrative employe of the Young Women's Christian Association here for more than 30 years, died Sunday at Arlington Hospital after a series of strokes.

A Washington resident for more than 60 years, she moved here with her husband, W. Pearce Rayner, in 1913. Mr. Rayner, who founded this city's old Home Defense League during World War I as a civil defense and rescue organization, died in 1928.

In the late 1930s, Mrs. Rayner started working as a volunteer at the YWCA here. She subsequently became a salaried employe and was in charge of the Y's information service for a time. She held a number of other administrative positions with the Y before retiring in 1969.

Mrs. Rayner was born in Dayton, Ohio, and reared in Pennsylvania. She attended Smith College in Massachusetts.

She had been living with a daughter, Hester Rayner Bates of Arlington, since 1974.

Besides Mrs. Bates, survivors include a son, Pearce T., of Orlando, Fla., 10 grandchildren and 25 great-grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to the YWCA in Washington, the Hospice of Northern Virginia or to Arlington Hospital.