Satin () is a weave that typically has a glossy surface and a dull back. It is a warp-dominated weaving technique that forms a minimum number of interlacings in a fabric. If a fabric is formed with a satin weave using filament fibres such as silk, nylon, or polyester, the corresponding fabric is termed a satin, although some definitions insist that the fabric be made from silk. If the yarns used are short-staple yarns such as cotton, the fabric formed is considered a sateen.

is a manga series written and illustrated by Takao Saito, published in Shogakukan's Big Comic magazine since January 1969. In 1975, the manga won the 21st Shogakukan Manga Award for general manga. The series follows the titular character, a professional assassin for hire.