W1 could refer to: * W1, a postcode district in the

W postcode area The W (Western and Paddington) postcode area, also known as the London W postcode area is a group of postcode districts covering part of central and part of West London, England. The area originates from the Western (W1) and Paddington (W2-14) ...

of London *

British NVC community W1 (Salix cinerea - Galium palustre woodland) British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, ...

, one of the woodland communities of the British National Vegetation Classification * W-1

tool steel Tool steel is any of various carbon steels and alloy steels that are particularly well-suited to be made into tools and tooling, including cutting tools, dies, hand tools, knives, and others. Their suitability comes from their distinctive har ...

, a water-hardening steel * one of four manuscripts containing the

Magnus Liber The ''Magnus Liber'' or ''Magnus liber organi'' (English translation: ''Great Book of Organum''), written in Latin, was a repertory of medieval music known as organum. This collection of organum survives today in three major manuscripts. This rep ...

, or Magnus liber organi, a compilation of medieval music. The term is derived from the Wolfenbüttel library which holds the manuscript (Herzog August Bibliothek). *

GN W-1 The W-1 was a class of electric locomotive used by the Great Northern Railway. They were constructed to haul trains on the electrified portion of the railroad across the Cascade Mountains from Wenatchee, Washington to Skykomish, Washington, inc ...

, an electric locomotive built for the Great Northern Railway *

LNER Class W1 The LNER W1 No. 10000 (also known as the ''Hush-Hush'' due to its secrecy) was an experimental steam locomotive fitted with a high pressure water-tube boiler. Nigel Gresley was impressed by the results of using high-pressure steam in marine app ...

, an experimental locomotive designed by Sir Nigel Gresley for the London and North Eastern Railway * second step of the W0-W6 scale for the

classification of meteorites by weathering Meteorite weathering is the terrestrial alteration of a meteorite. Most meteorites date from the oldest times in the Solar System and are by far the oldest material available on our planet. Despite their age, they are vulnerable to the terrestr ...

Wrestle-1 was a Japanese ''puroresu'' or professional wrestling promotion, founded in July 2013 by Keiji Mutoh following his resignation from All Japan Pro Wrestling (AJPW). The core of the promotion's roster was formed by wrestlers loyal to Mutoh, who lef ...

, a Japanese professional wrestling promotion * The computational complexity class W /nowiki> in parameterized complexity * The

Apple W1 Apple silicon is a series of system on a chip (SoC) and system in a package (SiP) processors designed by Apple Inc., mainly using the ARM architecture. It is the basis of most new Mac computers as well as iPhone, iPad, iPod Touch, Apple TV, ...

wireless pairing chip primarily used in AirPods * W1 tram, a class of electric trams built by the Melbourne & Metropolitan Tramways Board. W-1 could refer to: * U.S. uniformed services pay grades#Warrant Officer pay grades

See also