Constantijn is a common Dutch name, often associated with historical figures and royalty. One notable person is Constantijn Huygens, a 17th-century poet and composer who played a significant role in the Dutch Golden Age. He was also a close associate of the scientist Christiaan Huygens, his son. In modern times, the name is often linked to Constantijn van Oranje, a member of the Dutch royal family. He is known for his involvement in various cultural and social initiatives in the Netherlands. The name Constantijn continues to be popular in Dutch-speaking regions.