Duke Arnold of Gelre, also known as Arnold IV, was a nobleman who ruled the Duchy of Gelre in the late 14th century. He was born around 1364 and became Duke in 1423. His reign was marked by efforts to strengthen the duchy's power and influence in the region, particularly in the context of the Holy Roman Empire. Arnold was involved in various conflicts, including disputes with neighboring territories. He is known for his attempts to maintain peace and stability within his duchy, as well as for his alliances with other noble families. His legacy includes contributions to the political landscape of Northeast Brabant and Lower Rhineland.