The following list enumerates the top 10 rarest snakes in the world. These species are characterized by their limited distribution, low population numbers, and vulnerability to habitat loss and other threats. The list includes the Madagascar ground boa, the Saint Lucia racer, the Antiguan racer, the Aruba Island rattlesnake, the Round Island boa, the Cuban boas, the Jamaican boa, the Brazilian rainbow boa, the Madagascar leaf-nosed snake, and the Baja California rattlesnake. These snakes are of great interest to conservationists and herpetologists, who work to protect and study them in order to better understand their ecology and promote their survival.