Yongin is a city in the Seoul Capital Area, the largest in Gyeonggi Province, South Korea. With a population over 1 million, the city has developed rapidly since the 21st century, recording the highest population growth of any city in the country. Yongin is home to Everland and Caribbean Bay, South Korea's most popular amusement and water parks. The city is also home to the Korean Folk Village, the largest of its kind. Yongin-si is a multi-nuclear city with multiple urban centers, not a single nuclear structure, and Giheung-gu crosses the Yeongdong Expressway and Dongbaek, while Suji-gu crosses Pungdeokcheon Stream and Jukjeon.

Gyeonggi Province is the most populous province in South Korea.