Full-time top executives at trade and professional associations that lobby here earned an average of $202,767 last year, with the Motion Picture Association's Jack Valenti topping the list at $672,590, a survey by the National Journal found.

Valenti, who became president of the association after serving as a White House aide in the Johnson administration, was the highest paid executive in the survey of major trade and professional associations and interest groups by the magazine.

Like many other executives in the survey, Valenti is chief Washington lobbyist for the people he represents.

Highest paid among interest groups was Horace Deets, executive director of the American Association of Retired Persons, who earned $220,000.

The magazine said its survey was based primarily on Internal Revenue Service records. It said the figures given excluded benefits and expense allowances.

Ranking second to Valenti in pay was James H. Sammons, executive vice president of the American Medical Association, who earned $623,167. He since has been replaced by James S. Todd, who makes $411,000.

Jason S. Berman, a former congressional aide who is president of the Recording Industry Association of America, was third at $551,731.

Next in order were Edward I. O'Brien, Securities Industry Association, $511,159; Robert E. Vagley, American Insurance Association, $474,122; former senator Richard S. Schweiker (R-Pa.), American Council of Life Insurance, $473,937; Charles J. DiBona, American Petroleum Institute, $468,408; Donald G. Ogilvie, American Bankers Association, $450,932; former Agriculture Department official John M. Damgard, Futures Industry Association, $407,500, and David Silver, Investment Company Institute, $404,652.

Among executives of research organizations, Edwin J. Feulner Jr., president of the Heritage Foundation, was in first place at $258,721. After him was Christopher C. DeMuth, president of the American Enterprise Institute for Public Policy Research, at $220,000.

The highest paid labor executive was William J. McCarthy, president of the International Brotherhood of Teamsters, at $283,145. President Henry Duffy of the Air Line Pilots Association was close behind at $256,424.

Ranking behind Deets among heads of interest groups, those that do not represent a specific industry, were Jay D. Hair, who earned $188,847 as president of the National Wildlife Federation, and Faye Wattleton, who was paid $184,000 as president of the Planned Parenthood Federation of America Inc.