The Social Investment Forum (SIF) is a national nonprofit trade association, based in Washington, D.C., dedicated to promoting the concept, practice, and growth of socially and environmentally responsible investing. As of January 2006, the Forum's membership included more than 600 social investment practitioners and institutions (private investors are served by joining the SIF partner, Co-op America).

Founded in 1981, the SIF conducts and communicates research on socially responsible investment. The Forum provides listings of financial professionals, mutual funds, information sources, and community investments that provide socially responsible investing. With its Web site, annual conference, socially responsible investor mailing list, membership directory, and Listserv, SIF supports a community of committed financial professionals. Furthermore, it offers an annual monetary award, the Moskowitz Prize (named for the pioneer investigator ...