ONT

ONT or Ont may refer to:

Organisations

 * Organización Nacional de Transplantes (National Transplant Organization), a Spanish government agency
 * Ordo Novi Templi (Order of the New Templars), an occult anti-semitic society founded 1907 by Lanz von Liebenfels
 * Ontario Network Television, a predecessor of the defunct Canadian Baton Broadcast System
 * Obshchenatsional'noe Televidenie (All-National Television), a Belarusian national television station
 * Oxford Nanopore Technologies, a UK-based nanopore sequencing company

Transportation

 * On Ting stop (MTR station code ONT), a Light Rail stop in Hong Kong
 * Ontario International Airport (IATA code ONT), a public airport in Ontario, California, US
 * Ontario Northland Railway, a Canadian railway operated by the Ontario Northland Transportation Commission

Science and technology

 * Optical network terminal, an interface between a company's fiber optic network and premises wiring
 * Ortho-nitrotoluene, an organic compound

Other uses

 * Ontario (Ont.), a province of Canada
 * Ontology