Arnold of Soissons was a Benedictine monk and Catholic bishop who lived from approximately 1040 to 1087. Born in Brabant, he initially pursued a military career before joining the monastery at St. Medard's Abbey in France. Although he sought to avoid leadership roles, he served as both an abbot and the Bishop of Soissons. Later in life, he founded the Abbey of St. Peter in Oudenburg, where he focused on monastic life and local community welfare.