Strait Jacket (ストレイト・ジャケット Sutoreito Jaketto?) is a light novel series by Ichirō Sakaki with illustrations by Yō Fujishiro, published by Fujimi Shobo under their Fujimi Fantasia Bunko imprint. It was published in 11 volumes between 2000 and 2010. The series was adapted into a 3-episode OVA series in 2007. A film version of the OVA aired in the United States on the Sci-fi channel.