Count Emmo, Immo or Emmon (d. before 17 Jan 1078) is one of the first known counts of Loon (or Looz) in the region of modern Belgian Limburg.
His mother is named clearly as Ludgarde of Namur, a sister of Albert the count of Namur, in a work about the life of her cousin, Bishop Arnulf of Soissons.
[1] On several occasions, Emmo and his brother Otto were jointly referred to as counts of Loon, though Otto's descendants became counts of the neighbouring castle of Duras.
In 966 the lord of Gelmen was also named Count Immo.
As shown by Verdonk, Emmo married Suanhildis, who was probably the daughter of Dirk III Hierosolymita, a count in West Frisia, and an ancestor of the counts of Holland.