Sayed Nabi Siddiqui is an Afghan police officer who alleges that in August 2003 he was stripped naked by U.S.-led coalition forces, and beaten and photographed at a U.S. base in the city of Gardez in the Afghan province of Paktia. Siddiqui also alleged he was subjected to sexual abuse, taunting and sleep deprivation. On May 12, 2004, the U.S. military announced it had opened an investigation into the allegations.

Siddiqui was detained on July 15, 2003, after he reported police corruption and someone then accused him of being a member of the Taliban.