John Hansen is a common name and can refer to various individuals across different fields. One notable John Hansen was an American politician who served in the U.S. House of Representatives during the late 19th century. He was known for his contributions to local governance and community development. Another John Hansen is recognized in the world of sports, particularly as a professional American football player. He played as a linebacker and made significant contributions to his teams during his career. Both individuals have made their mark in their respective areas, showcasing the versatility of the name.