Costin is a name that can refer to various individuals and places. It is often used as a first name in several cultures, particularly in Romania. The name is derived from the Latin name "Constantinus," meaning "steadfast" or "constant." In addition to being a personal name, Costin can also refer to locations, such as Costinesti, a popular seaside resort in Romania. Known for its vibrant nightlife and beautiful beaches, Costinesti attracts many tourists, especially during the summer months.