George Parashos Giavasis, 46, executive vice president of the Curtis Properties Corporation, died Wednesday at Sibley Memorial Hospital. He had cancer.

He joined Curtis Properties, a real estate sales and development corporation, 19 years ago as a salesman. He held a variety of posts with the company, including vice president for finance, before becoming executive vice president.

Mr. Giavasis was born in Baltimore and was a 1957 graduate of the University of Maryland. He then spent three years in the Air Force and worked in advertising before joining Curtis.

He was official scorer of the University of Maryland basketball team and statistician for the university's football team from 1955 to 1979.He also had been chief statistician of the Washington Redskins football team for 15 years.

Mr. Giavasis was a resident of Bethesda. He was a member of the Sons of Pericles, the Terrapin Club, and Bethesda Country Club. His professional memberships included the Maryland Home Builders Association.

Survivors include his wife, Gayle, a son, Nicholas, and two daughters, Denise and Donna, all of Bethesda; his mother, Mary L. Peters of Catonsville, and as sister Constance Lissau of Ellicott City.

The family suggests that expressions of sympathy be in the form of contributions to the American Cancer Society.