Henry IV of Bar (between 1315 and 1320–1344) was count of Bar from 1336 to 1344. His aunt, Joan of Bar, Countess of Surrey, governed Bar in his name during his minority. He was the son of Edward I of Bar and his wife Marie of Burgundy. He married Yolande of Dampierre (died 1395), a granddaughter of Robert III, Count of Flanders. Both his children (Edward II of Bar and Robert I of Bar) succeeded him as count.