Ivan Sratsimir of Bulgaria

Ivan Sratsimir (1324 or 1325 – c. 1397) was a son of Tsar Ivan Alexander of Bulgaria and Theodora of Wallachia. Proclaimed co-emperor in 1337 with Vidin as his appanage, he was disinherited in favour of his half-brother Ivan Shishman and in 1356 declared himself emperor at Vidin.

After 1371 he broke with Tarnovo. He joined King Sigismund's crusade against the Ottomans, but after Nicopolis in 1396 they seized Vidin and took him to Bursa, where he was probably strangled, the last ruler of medieval Bulgaria.