Herigerus (c. 925 – 31 October 1007) was a Benedictine monk, often known as Heriger of Lobbes for serving as abbot of the abbey of Lobbes between 990 and 1007.[1] Remembered for his writings as theologian and historian, Herigerus was a teacher to numerous scholars. His biography describes him as "skilled in the art of music", though no music theory treatise survives and neither do the two antiphons and one hymn attributed to him.[2]