Stan Smith, who has won U.S. Open tennis titles in three decades, was honored by the Washington Area Tennis Patrons Foundation with its fifth Patrons service award yesterday.

At a luncheon at the Four Seasons Hotel, the foundation also presented its first award for local service, to Bill Barber, who runs many of the Patrons' junior tennis programs.

Smith, 34, was America's top singles player in the early 1970s before elbow problems affected his game. However, he and Bobby Lutz won the 1980 U.S. Open doubles championship and Smith said yesterday that he and Lutz will play Davis Cup doubles for the U.S. this year.

In a financial statement, the Patrons reported that for fiscal year 1979 they collected $166,614, including $97,614 from the Washington Star International tournament, and disbursed $165,806, split between junior tennis programs and improvements in the Washington Tennis Stadium at 16th and Kennedy streets NW.

Paul R. Ignatius was re-elected president in what amounts to a formality to complete a two-year term.

Elected to the board of directors were Mrs. Calvin H. Cobb, Carl T. Rowan Jr., James W. Symington, Mrs. Oliver T. Carr Jr., H. George Schweitzer, Robert Booth and Mrs. Phillip E. Ruppe.