The contributions of the American Psychological Association (APA) to the public interest are assessed. APA has taken an effective leadership role on issues involving justice to the disadvantaged categories of its own membership. On other issues, which have been more controversial, APA has been less effective, partly because APA participates in our culture of self-interest and individualism, and partly because identifying the public interest is inherently political. Psychologists are urged to look beyond self and group interests toward the urgent issues of our time concerning survival and justice. All the same, how APA pursues the guild interests of psychology as a science and as a profession impinges strongly on the public interest in any plausible sense and requires close scrutiny. Because the public interest can only be determined by a political process, open advocacy on public interest issues within APA governance structure is appropriate. (PsycINFO Database Record (c) 2012 APA, all rights reserved)