William IV of Montferrat was a nobleman who ruled the March of Montferrat in northern Italy during the late 13th century. He belonged to the Paleologo dynasty and was known for his efforts to strengthen his territory amidst the political turmoil of the time. His reign lasted from 1292 until his death in 1305. William IV was also involved in various military campaigns and alliances, which were common among the nobility of the era. His leadership contributed to the stability of the region, and he is remembered for his role in the complex feudal landscape of medieval Italy.