Naikan - Introspection
- What have I received from a specific person?
- What have I given, what have I done for this person?
- What troubles and difficulties have I caused this person?
- www.naikan.eu and www.insightvoice.at : INSIGHTVOICE NAIKAN CENTER VIENNA, directed by Naikan guide Johanna Schuh
- www.naikan.com : NAIKAN ZENTRUM NEUE WELT INSTITUT, directed by Naikan guide Franz Ritter
- DAS NAIKANHAUS, 3293 Lunz am See, Bodingbach 91, Tel. 07486 / 8513, directed by Naikan guide Helga Hartl-Margreiter
- www.naikido.at : NAIKAN ZENTRUM Oberösterreich, directed by Naikan guide Ernst Stockinger
- www.breitenstein.or.at : BILDUNGSHAUS BREITENSTEIN, directed by Naikan guide Joseph Badegruber
- www.naikan.de and naikanhaus.de : Naikan-Center located in Schleswig-Holstein, directed by Jörg Alex Fot.
- www.praxis-naikan.de : NAIKAN HAUS, directed by Naikan guide Ingrid Stempel.
- www.naikan-zentrum.de : NAIKAN ZENTRUM BAYERISCHER WALD, directed by Naikan guide Sabine Kaspari.
- Haus Isis - Gemeinnützige Gesellschaft für Psychohygiene, 01159 Dresden, Emil-Ueberall-Strasse 22, Tel. +49 - 351 - 4213393
- zenklause.de : Zen- and Naikan-Center Sanko-ji, located in Elbenschwand, directed by Volker Gyoriki Herskamp.
- www.todoinstitute.com : TODO INSTITUTE, directed by Gregg Krech. USA.
- naikan.world : North American Naikan Council, USA/Canada.
- www.e-naikan.com : Toyoko-Inn Hakone National Park Naikan Institute in Japan. English information about Naikan.
- rengein.jp/naikan : Rengein Tanjōji temple in Kumamoto in Japan. English information about Naikan.