Bisol (?-1225) was a French Templar knight during the 13th century. The brother of Commander Titus, he was sent to lead an ambassadorial regiment to the Seljuks in 1225, bringing with him the captured fugitives Shahzade Numan and his children Halime and Yigit. The trio briefly escaped from Bisol before he injured Numan in the leg with an arrow and recaptured them, and he then attempted to rape Halime. However, he was interrupted by the attack of Ertugrul and his hunting party of Kayi Turks, and Ertugrul stabbed Bisol in the neck with a dagger, killing him. The Seljuk general Karatoygar later discovered the scene of the attack and sent Bisol's body to Titus to encourage him to help him seek revenge against the Kayis.