The Bula (; , PÃÂla; ) is a river in the Chuvash Republic and the Republic of Tatarstan, Russia, a left-bank tributary of the Sviyaga. Its length is and its drainage basin is . It originates in the Chuvash Republic and falls into the Sviyaga River south of Devlikeyevo.
Major tributaries are the Cheremshan and the Malaya Bula. The maximum mineralization is 700âÂÂ1000 mg/L. Batyrevo, the administrative center of Batyrevsky District of the Chuvash Republic, is located on the river.