IEN

IEN or ien or variation, may refer to:

People

 * Marci Ien (born 1969), Canadian politician
 * Ien Ang (born 1954), Australian professor
 * Ien Chi (born 1991), Korean-American filmmaker
 * Ien Dales (1931–1994), Dutch politician
 * Ien van den Heuvel (1927–2010), Dutch politician
 * Ien Lucas (born 1955), Dutch artist

Organizations

 * Indigenous Environmental Network
 * Irish Environmental Network

Publications

 * Internet Experiment Note
 * Industrial Engineering News group of magazines
 * Industrial Engineering News Europe
 * Industrial Engineering News Italia

Other uses

 * Interrupt ENable flip-flop