The spelling Hangeul/hangeul is from the Korean spelling in the 1959-SK transcription and the 2000 South Korean Revised transcription. Hangul derives from the older McCune-Reischauer transcription hangŭl written without the diacritics: it is the more common English spelling. Within the English Wiktionary, hangeul is preferred.
한글(han'geul) is the official name in South Korea, and 조선(朝鮮)글(joseon'geul) is the official name in North Korea; hence, scholars may prefer to use Hangeul in reference to South Korea, and Chosongul in reference to North Korea.
