- Født: Maj 925
- Død: 11 Okt. 965, Reims, , Champagne-Ardenne, Frankrig i en alder af 40 år
Bruno the Great or Bruno I, (May 925 - 11 October 965) was Archbishop of Cologne, from 953 until his death and Duke of Lotharingia from 954. He was the brother of Otto I, king of Germany and later Holy Roman Emperor.
Bruno was the youngest son of Henry the Fowler and his second wife Matilda. While he was still a child, it was decided that he should pursue an ecclesiastical career. In the early 940s he was educated in Trier by the leading scholar, Israel the Grammarian. In 951, Otto appointed Bruno as his archchaplain.