W9 may refer to:
*
A form used by the US federal government for tax purposes
* W9, 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) ...
(England)
*
W9 (TV channel)
W9 () is a French television network available through digital terrestrial television TNT, satellite and ADSL. It is a subsidiary of the Groupe M6; the name W9 has been selected for the channel because "W9" is a mirror written equivalent of " ...
, a French television channel
*
W9 (nuclear warhead)
The W9 was an American nuclear artillery shell fired from a special howitzer. It was produced starting in 1952 and all were retired by 1957, being superseded by the W19.
Description
The W9 was in diameter, long, and weighed . It had an exp ...
*
Air Bagan
Air Bagan Limited ( my, အဲပုဂံ) was an airline headquartered in Bahan Township, Yangon, Myanmar. It operated domestic scheduled services within Myanmar, as well as to Thailand. Its main bases were Yangon International Airport and Mand ...
, by IATA code
*
London Buses route W9
* , several ships
* The scientific designation for the
Niland Geyser
Niland Geyser (nicknamed the "Slow One" and formally designated W9) is a moving mud pot or mud spring outside Niland, California in the Salton Trough in an area of geological instability due to the San Andreas fault, formed due to carbon dioxide be ...
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