- Haiku Poets of Central Maryland – a collection of haiku poets (most) living in the central Maryland region. Meetings every other month. Sponsors the annual Anita Sadler Weiss Memorial Haiku Contest.
- Haiku Society of America – Founded by Harold G. Henderson and Leroy Kanterman to promote the writing and appreciation of haiku poetry in English. Meeting regularly at changing locations throughout the country since its inception; sponsors open lectures, workshops, readings, and contests. Publishes Frogpond.
- World Haiku Organization – One form, many languages. Haiku and haiku resources from around the world.
- The Heron’s Nest – a quarterly online publication that produces an annual print volume collecting the year’s work.
- Modern Haiku – an independent journal of haiku and haiku studies. Three volumes annually.
- Frogpond – Published three times a year by the Haiku Society of America.