North West England, informally known as The North West, is one of the nine official regions of England. The region comprises five ceremonial counties of England – Cumbria, Lancashire, Greater Manchester, Merseyside, and Cheshire. The North West had a 2006 estimated population of 6,853,201 the third most populated region after London and the South East.

North West England is bounded to the east by the Peak District and the Pennines and to the west by the Irish Sea. The region extends from the Scottish Borders in the north to the northern margins of the English Midlands in the south. To its south west is North Wales. Amongst the better known of the North West's physiographical features are the Lake District and the Cheshire Plain. The highest point in North West England (and the highest peak in England) is Scafell Pike, Cumbria, at a height of 3,209 feet (978 m).

A mix of rural and urban landscape, two large conurbations, centred on Liverpool and Manchester, occupy much of the south of the region. The north of the region, comprising Cumbria and northern Lancashire, is largely rural, as is the far south which encompasses parts of the Cheshire Plain and Peak District.

England ⁱ/ˈɪŋɡlənd/ is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, while the North Sea to the east and the English Channel to the south separate it from continental Europe. Most of England comprises the central and southern part of the island of Great Britain in the North Atlantic. The country also includes over 100 smaller islands such as the Isles of Scilly and the Isle of Wight.

The area now called England was first inhabited by modern humans during the Upper Palaeolithic period, but it takes its name from the Angles, one of the Germanic tribes who settled during the 5th and 6th centuries. England became a unified state in AD 927, and since the Age of Discovery, which began during the 15th century, has had a significant cultural and legal impact on the wider world. The English language, the Anglican Church, and English law—the basis for the common law legal systems of many other countries around the world—developed in England, and the country's parliamentary system of government has been widely adopted by other nations. The Industrial Revolution began in 18th-century England, transforming its society into the world's first industrialised nation. England's Royal Society laid the foundations of modern experimental science.

Northwest, north-west or north west is the ordinal direction halfway between north and west on a compass. Northwest may also refer to