Henry I of Bar (1158 – October 1190) was Count of Bar, lord of Mousson and Amance from 1170 to 1190. He was the son of Renaut II of Bar and Agnes of Champagne. He was still under-age at the time of his father's death, and his mother acted as regent for him from 1170 to 1173. Since some of his ancestors had been Counts of Verdun, Agnes of Champagne reclaimed the county of Verdun from its bishop in 1172, but he resisted. She responded by laying waste the diocese of Verdun. Both mother and son were excommunicated and forced to submit in 1177.