Károly Kós (1883-1977) was a prominent Hungarian architect, writer, and politician known for his contributions to the Transylvanian architectural style. He played a significant role in the Hungarian cultural scene, particularly in the early 20th century, and was a key figure in the Hungarian folk art movement. His designs often incorporated traditional elements, reflecting the local heritage and landscape. In addition to his architectural work, Kós was an influential advocate for Hungarian nationalism and the preservation of Transylvanian culture. He authored several books and articles, promoting the importance of regional identity and the integration of modern techniques with traditional craftsmanship in architecture.