ATW may refer to:
Atwater is a city on State Route 99 in Merced County, California, United States. Atwater is 8 miles (13 km) west-northwest of Merced, at an elevation of 151 feet (46 m).
Atwood is a city in and the county seat of Rawlins County, Kansas, United States. As of the 2010 census, the city population was 1,194.
Atwater Village is a highly diverse neighborhood in the 13th district of Los Angeles, California. Much of Atwater Village lies in the fertile Los Angeles River flood plain.
Atwater v. Lago Vista, 532 U.S. 318 (2001), was a United States Supreme Court decision which held that a person's Fourth Amendment rights are not violated when the subject is arrested for driving without a seatbelt.
Atwell is a suburb within the metropolitan area of Perth, Western Australia, Western Australia, situated 21 kilometres (13 mi) south of Perth City, and located in the City of Cockburn local government area.
Atworth is a village and civil parish in west Wiltshire, England. The village is on the A365 road between Melksham and Box, about 2.5 miles (4 km) northwest of Melksham and 4 miles (6 km) northeast of Bradford on Avon.
The Atwater system (after Wilbur Olin Atwater) or derivatives of this system are used for the calculation of the available energy of foods.
Atwood Lake is a reservoir located in Tuscarawas and Carroll counties in east central Ohio. The lake is formed by Atwood Dam 40°31′36″N 81°17′5″W across Indian Fork, a tributary of Conotton Creek .
Atwater is a city in Kandiyohi County, Minnesota, United States. The population was 1,133 at the 2010 census.