Nevis ( NEE-viss) is a small island in the Caribbean Sea that forms part of the inner arc of the Leeward Islands chain of the West Indies. Nevis and the neighbouring island of Saint Kitts constitute the Federation of Saint Kitts and Nevis, a singular nation state. Nevis is located near the northern end of the Lesser Antilles archipelago about 350 kilometres (220 mi) east-southeast of Puerto Rico and 80 kilometres (50 mi) west of Antigua. Its area is 93 square kilometres (36 sq mi) and the capital is Charlestown.

Saint Kitts and Nevis are separated by The Narrows, a shallow 3-kilometre (2 mi) channel roughly conical in shape with a volcano known as Nevis Peak at its centre. The island is fringed on its western and northern coastlines by sandy beaches composed of a mixture of white coral sand with brown and black sand eroded and washed down from the volcanic rocks that make up the island. The gently-sloping coastal plain (1 km (0.62 mi) wide) has natural freshwater springs as well as non-potable volcanic hot springs, especially along the western coast.

The island was named Oualie, translated as "land of beautiful waters", by the Kalinago and Dulcina ("Sweet Island") by the early British settlers. The name Nevis is derived from the Spanish phrase Nuestra Señora de las Nieves, which translates as Our Lady of the Snows; the name was given by its Spanish discoverers and first appeared on maps in the 16th century. Nevis is also known by the sobriquet "Queen of the Caribees", which it earned in the 18th century because of its many sugar plantations.

Nevis is both geographically smaller and less populous than Saint Kitts. It maintains significant autonomy within the federation, including a separate government headed by the premier of Nevis and a separate legislature. Nevis has twice voted – in 1977 and 1998 – to secede from the federation, but neither attempt succeeded.

The majority of the approximately 12,000 Nevisians are of primarily African descent, with notable British, Portuguese, and Lebanese minority communities. English is the official language, and its literacy rate of 98 percent is one of the highest in the Western Hemisphere.