| Endocrine Journal | |
| Formernames: | Naibunpigaku Zasshi, Nihon Naibunpigaku-kai Zasshi, Endocrinologia Japonica |
| Abbreviation: | Endocr. J. |
| Discipline: | Endocrinology |
| Editor: | Itaru Kojima |
| Publisher: | The Japan Endocrine Society |
| Country: | Japan |
| History: | 1925–present |
| Frequency: | Monthly |
| Openaccess: | Yes |
| Impact: | 2.019 |
| Impact-Year: | 2013 |
| Issn: | 0918-8959 |
| Eissn: | 1348-4540 |
| Coden: | ENJOEO |
| Oclc: | 53816300 |
| Website: | http://square.umin.ac.jp/endocrine/english/EJ-top.html |
| Link1: | http://www.jstage.jst.go.jp/browse/endocrj |
| Link1-Name: | Online access |
Endocrine Journal is a monthly peer-reviewed medical journal covering endocrinology published by The Japan Endocrine Society. It was established in 1925 as Naibunpigaku Zasshi and renamed Nihon Naibunpigaku-kai Zasshi in 1927. In 1954 it was restarted as an English journal, entitled Endocrinologia Japonica and obtained its current title in 1993.[1] The editor-in-chief is Itaru Kojima (Gunma University).