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Have a general question or concern? Call our help line at 703-292-8050 or email us at

Award fraud or abuse

If you’re concerned about fraud or abuse with any award, contact the NSF Office of the Inspector General at 703-292-7100 (business hours) or 703-244-4443 (to speak to the duty officer).

You can also report fraud to the anonymous fraud hotline at 800-428-2189, email, or send written correspondence to 4201 Wilson Boulevard, Suite 1135; Arlington, VA 22230; ATTN: OIG hotline.

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Notice something wrong with the site or want to make a recommendation? You can share feedback by emailing us at We’ll respond as quickly as possible — usually within a few business days.