LORAN, short for long range navigation, was a hyperbolic radio navigation system developed in the United States during World War II. It was similar to the UK's Gee system but operated at lower frequencies in order to provide improved range up to with accuracy of tens of miles. It was first used for ship convoys crossing the Atlantic Ocean, and then by long-range patrol aircraft, but found its main use on the ships and aircraft operating in the Pacific theatre.

Loran may refer to:

• LORAN, a WWII radio-based navigation system, also known as Loran-A
• Loran-C, an improved navigation system that replaced the original LORAN
• Loran (cassette), a brand of blank audio cassette made of Lexan plastic
• Loran (death knight), a fictional character in the World of Greyhawk campaign setting for the Dungeons & Dragons role-playing game
• Loran, Iran, a village in Khuzestan Province, Iran
• Loran Award, an undergraduate scholarship in Canada
• Loran L. Lewis (1825–1916), New York judge and politician
• Loran Cehack, the fictional protagonist in the anime series Turn A Gundam
• First Maje Loran, the leader of the Kazon-Hobii from Star Trek: Voyager