Honolulu Diamond Sangha
- A lay Zen Buddhist organization, was founded in 1959 by Anne Hopkins Aitken and Robert Aitken, Roshi, dharma heir of Yamada Roshi and author of Taking the Path of Zen, The Gateless Barrier: The Wu Men Kuan, and seven other Zen books.
- http://www.diamondsangha.org/

Honolulu: Institute of Zen Studies
- Founded in 1982 by Omori Sogen Rotaishi, the mission of the Institute of Zen Studies is to make Zen more accessible to modern society.
- http://www.izs.org/