- Jean Piaget School of Health - Algarve (Instituto Piaget) DEQARINST4833 PT0107 Escola Superior de Saúde Jean Piaget de Algarve Silves (Portugal)
- Jean Piaget School of Health - Vila Nova de Gaia (Instituto Piaget) DEQARINST2172 PT0108 Escola Superior de Saúde Jean Piaget de Vila Nova de Gaia Vila Nova de Gaia (Portugal)
- Jekabpils Agrobusiness College DEQARINST1678 LV0042 Jekabpils Agrobiznesa koledža Jekabpils (Latvia)
- Jesuit University Ignatianum in Krakow DEQARINST2020 PL0287 Uniwersytet Ignatianum w Krakowie Kraków (Poland)
- Jewish Theological Seminary - University of Jewish Studies, Budapest DEQARINST4625 HU0024 Országos Rabbiképző - Zsidó Egyetem Budapest (Hungary)
- Jędrzej Śniadecki Academy of Physical Education and Sport in Gdańsk DEQARINST1850 PL0035 Akademia Wychowania Fizycznego i Sportu im. Jędrzeja Śniadeckiego w Gdańsku Gdańsk (Poland)
- Jinan University DEQARINST7747 Tripoli (Lebanon)
- Jinan University DEQARINST5220 Университет Цзинань Guangzhou (China, People's Republic of)
- Jinzhong College of Information DEQARINST8768 晋中信息学院 Jinzhong (China, People's Republic of)
- JML Jam Music Lab Private University for Jazz and Popular Music Vienna DEQARINST6533 AT0072 Vienna (Austria)
- João de Deus Higher School of Education DEQARINST2162 PT0090 Escola Superior de Educação de João de Deus Lisboa (Portugal)
- Johannelund School of Theology DEQARINST8564 SE0054 Johannelunds teologiska höhskola Uppsala (Sweden)
- Johannes Gutenberg University Mainz DEQARINST0398 DE0087 Johannes Gutenberg-Universität Mainz Mainz (Germany)
- John Paul II University in Biala Podlaska DEQARINST1892 PL0099 Akademia Bialska im. Jana Pawła II Biała Podlaska (Poland)
- John von Neumann University DEQARINST4637 HU0076 Neumann János Egyetem (NJE) Kecskemét (Hungary)
- John Wesley Theological College DEQARINST1349 HU0069 Wesley János Lelkészképző Főiskola (WJLF) Budapest (Hungary)
- Joint-Stock Company "Academy of Logistics and Transport" DEQARINST3101 Акционерное общество "Академия логистики и транспорта" Almaty (Kazakhstan)
- Jordan University of Science and Technology DEQARINST5822 جامعة العلوم والتكنولوجيا الأردنية Irbid (Jordan)
- Joseph Fourier University DEQARINST0959 FR0073 Université Joseph Fourier Grenoble (France)
- José Simeón Cañas Central American University DEQARINST7302 Universidad Centroamericana José Simeón Cañas Antiguo Cuscatlán (El Salvador)