James William Breen (born 1947) is a Research Fellow at Monash University in Australia, where he was a professor in the area of IT and telecommunications before his retirement in 2003. He holds a BSc in mathematics, an MBA and a PhD in computational linguistics, all from the University of Melbourne. He is well known for his involvement in several popular free Japanese-related projects: the EDICT and JMDict Japanese–English dictionaries, the KANJIDIC kanji dictionary, and the WWWJDIC portal which provides an interface to search them.
His EDICT dictionary and WWWJDIC server have been described as "reliable and close to comprehensive". The 195,000-term lexicon is used by popular apps such as ImiWa (iOS) and AEDict (Android), and has been used to build other Japanese language learning sites such as Rikai and Jisho.org.
He remains a board member of the Japanese Studies Centre at Monash University.
- Alexander Jacoby (21 November 2006). "Net resources make light work of Japanese study". The Japan Times. Retrieved 2 February 2008.
- Mary Sisk Noguchi (30 August 2002). "KANJI CLINIC: Cyberspace – the final frontier of kanji-learning". The Japan Times.
- Morales, Daniel (25 June 2018). "At 180,000 entries, Jim Breen's freeware Japanese dictionary is still growing". The Japan Times. Retrieved 22 January 2021.
- "Welcome to the Japanese Studies Centre". Monash Asia Institute, Monash University. 7 December 2012. Retrieved 5 December 2014.