Sima Rangju (c. 800 BC, dates of birth and death unknown), military strategist of the Qi State [[齊國|齐国<Qíguó>]] and author of “Methods of Sima” [[司馬法|司马法<SīmǎFǎ>]], one of the Seven Military Classics of ancient China [[武經七書|武经七书<WǔjīngQīshū>]]