9-1-1, usually written 911, is an emergency telephone number for the United States, Canada, Palau, Argentina, Philippines, Jordan, as well as the North American Numbering Plan (NANP), one of eight N11 codes. Like other emergency numbers around the world, this number is intended for use in emergency circumstances only. Using it for any other purpose (such as making false or prank calls) is a crime in most jurisdictions.

In over 98% of locations in Argentina, Belize, Anguilla, Costa Rica, Ecuador, Jordan, Ethiopia, Liberia, Saudi Arabia, Philippines, Uruguay, United States, Palau, Mexico, Tonga and Canada, dialing "9-1-1" from any telephone will link the caller to an emergency dispatch officecalled a Public Safety Answering Point (PSAP) by the telecommunications industrywhich can send emergency responders to the caller's location in an emergency. In approximately 96 percent of the United States, the enhanced 9-1-1 system automatically pairs caller numbers with a physical address.In the Philippines, the 9-1-1 emergency hotline has been available to the public since August 1, 2016, starting in Davao City. It is the first of its kind in Asia-Pacific region. It replaces the previous emergency number 117 used outside Davao City.

As of 2017, a 9-1-1 system is in use in Mexico, where implementation in different states and municipalities is being conducted.

Haleyville is a city in Winston and Marion counties in the U.S. state of Alabama. It incorporated on February 28, 1889. Most of the city is located in Winston County, with a small portion of the western limits entering Marion County. Haleyville was originally named Davis Cross Roads, having been established at the crossroads of Byler Road and the Illinois Central Railroad. At the 2010 census the population was 4,173, down slightly from 4,182 in 2000.