Seattle:

Hypnokink Enthusiasts Group (HEG)

Pan Eros Foundation Hypnokink Enthusiasts Group Calendar Entries:
        February 19, 2022 @ 1 PM
  
      May 21, 2022 @ 1 PM
 
       August 20, 2022 @ 1 PM
        November 19, 2022 @ 1 PM
Hypnokink Enthusiasts Group Home Fetlife Group

National Erotic Hypnosis Conferences and Unconferences:

Beguiled - an annual pansexual erotic hypnosis conference, based near Chicago in Shaumburg, IL.  Held in the summer.

Charmed - an annual pansexual erotic hypnosis conference founded by folks like Mark Wiseman.  Based in Annapolis.  Typically held in January.

Hypnocon - a men's erotic hypnosis conference that, each year, moves from city to city across North America

NEEHU ("New England Erotic Hypnosis Unconference") - an annual pansexual erotic hypnosis conference, held in April (sometimes in March) in Hartford, CT.