Office of Strategic Influence is the first album by American progressive rock band OSI, released by InsideOut Music on February 18, 2003. The album was recorded in June 2002 and mixed in August 2002 at the Carriage House Studios in Stamford, Connecticut. Critical reception of the album was generally positive, praising the band's musicianship. Critics compared the band's sound to Porcupine Tree. Portnoy was ultimately dissatisfied with the experience of making the album. He performed on the second OSI album, Free, but was replaced by Gavin Harrison for Blood, the band's third album.