Gérard I is a proposed Count of Loon, in what is now Belgian Limburg, who was mentioned in a 1101 charter of Emperor Henry IV concerning the return of the town of Andenne by Albert III, Count of Namur. He probably did not exist. It was pointed out by J Daris in 1867 that there was another copy of the charter of 1101 which called Gérard simply a count, and Arnold was the one described as "Comes de Looz". The charter involved appears here.