John IV van de Werve, 7th Lord of Hovorst

John IV van de Werve, 7th Lord of Hovorst (died 1622) was an Flemish noble and knight.

Van de Werve was the son of John III van de Werve, Lord of Hovorst and Margareth van Baexem.

He married to Jossine Lomelline, Lady of the Archduchesse from Genovese nobility. He was succeeded as Lord of Hovorst by his son Auguste.

Van de Werve was counselor of war to Archduke Albrecht of Austria. He became by royal decree governor of Deynze.