Sima Ju 司馬俱 was a man from Le'an and leader of a group of bandits who called themselves Yellow Turbans.
A leader of a group of Yellow Turbans in Qing province, Sima Ju and his associate Xu He 徐和 attacked a number of cities and killed senior officials in his home commandery and neighbouring Ji'nan. Towards the end of 206 A.D. Cao Cao sent Xiahou Yuan against them with a large force of local troops from Taishan, Qi and Pingyuan, supported by Zang Ba and Lü Qian. After several engagements, with fierce fighting and heavy casualties, the rebels were defeated. Xu He was killed and Sima Ju presumably shared his fate.
- de Crespigny, Rafe. A Biographical Dictionary of Later Han to the Three Kingdoms (23 - 220 AD). Leiden: BRILL, 2007.