Eugene Walter Chevraux, 75, a retired senior financial adviser in the office of the secretary of the Treasury, died of cancer Thursday at Georgetown University Hospital.

Mr. Chevraux began government service in the late 1920s with the foreign service division of the Department of Commerce as assistant trade commissioner in Rio de Janeiro.

In 1935 he went to the Treasury Department as an adviser to the secretary of the Treasury.

He retired from government service in 1962 and received the Treasury Department's Gallatin Merit Award for Distinguished Service.

Mr. Chevraux then became a stock broker with the brokerage firms of Baine Webber & Curtis Inc. and, later, with Laidlaw and Laidlaw [WORD ILLEGIBLE] Inc., until his retirement in 1976.

He was born in Canton, Ohio. He graduated in 1924 from Hamilton College and later earned a master's degree from the Georgetown University School of Foreign Service. He also attended the Wharton School of Finance and Commerce at the University of Pennsylvania.

Mr. Chevraux was a member of the University Club, the Hamilton College Alumni Asosciation and Our Lady of Victory Catholic Church.

Survivors include his wife, Graziella de la Campa Ruth; two stepsons, Juan and Carlos of Washington, and a sister, Grace, and a brother, Robert, of Canton.

The family suggests that expressions of sympathy be in the form of contributions to the Vincent Lombardi Cancer Center of Georgetown University Hospital.