- M.A.S.S. F.I.L.C. is a 501(c)3 organization dedicated to the promotion of filk music. Activities include monthly meetings for singing and business, publication of books, and holding the ConCertino filk conventions.
- New York Metropolitan Filk Organization (NYMFO): Blurb and link to be added soon.
- Conglomeration : Conglomeration is a small non-profit organization established for the promotion of filk music in the Washington DC - Baltimore area. Its main activities are hosting a monthly housefilk (usually on the first Saturday of each month), running the Conterpoint conventions (when DC/Baltimore is hosting the Floating Northeast Filk Convention), conducting filk programming in conjunction with other conventions in the area, and producing recordings from these convention programs.
Interfilk: Not a northeastern US organization, but a fan fund which sends filkers to conventions they would not normally attend, and has sent guests to several of the northeast filk conventions.