Long

Long may refer to:

Measurement

 * Long, characteristic of something of great duration
 * Long, characteristic of something of great length
 * Longitude (abbreviation: long.), a geographic coordinate
 * Longa (music), note value in early music mensural notation

Asia

 * Long District, Laos
 * Long District, Phrae, Thailand
 * Longjiang (disambiguation) or River Long (lit. "dragon river"), one of several rivers in China
 * Yangtze River or Changjiang (lit. "Long River"), China

Elsewhere

 * Long, Somme, France

People

 * Long (surname)
 * Long (surname 龍) (Chinese surname)

Fictional characters

 * Long (Bloody Roar), in the video game series
 * Long, Aeon of Permanence in Honkai: Star Rail

Sports

 * Long, a fielding term in cricket
 * Long, in tennis and similar games, beyond the service line during a serve and beyond the baseline during play

Other uses

 * USS Long, a U.S. Navy ship name
 * Long (finance), a position in finance, especially stock markets
 * Lòng, name for a laneway in Shanghai
 * Long integer, a computer data type denoted by long in many programming languages
 * Lóng, pinyin transliteration of 龍 or 龙, the Chinese characters for "Chinese dragon"