Gertrude Gosnell Wills, 77, who was active in hospital, church and school activities and who also was an officer and director of various steamship and bus companies, died Thursday at Sibley Memorial Hospital. She had arteriosclerosis.

Mrs. Wills, whose ancestors settled in Maryland in the 17th century, was born in Baltimore and grew up in Granite, Md. After graduating from Maryland State Teachers College in Towson, she taught humanities at Catonsville High School.

In 1928, she married Benjamin C. Wills of Charles County, Md. They settled in Chapel Point, Md. Since the mid-1930s, they have lived in Washington.

During World War II, Mrs. Wills managed the Bay Ridge Beach, a hotel and beach complex near Annapolis. Later, she was president of Bay Ridge Beach Inc. For many years, she also was an officer and director of the Statue of Liberty Line, the Potomac River Line Inc. and the Tolchester Line, bus and steamship companies.

She was a member of the parish of Our Lady of Victory Catholic Church and past president of its Sodality. She also was a past president of the Ladies Board of Georgetown University Hoospital, the House of the Good Shepherd and thre Mothers Club of Gerogetown Prepratory School.

In addition to her husband, of Washington, survivors include three sons, Benjamin B. Jr., of Annapolis, J. Eugene, of Arlington, and P. Reed II, of Bethesda, and eight grandchildren.

The family suggest that expressions of sympathy be in the form of contributions to the Ladies Board, Georgetown University Hospital, Washington, D.C., 20017.