The Northern Ontario Hockey Association (NOHA) governed amateur hockey in Northern Ontario, Its jurisdiction included Ontario roughly north of a line just south of North Bay and west of a line west of Pembroke. In the west it extended to Sault Ste. Marie.
Until the 1960's the NOHA also included northwest Quebec - the area around Rouyn & Noranda. This was a geographical convenience, as the area was far from the rest of Quebec. In the 60's the area did join up with the Quebec Amateur Hockey Association.
The NOHA was only semi-independent from the Ontario Hockey Association (OHA). The OHA did exercise some control over the NOHA. For about a decade, the NOHA senior champion had to play the OHA intermediate champion in the Allan Cup playoffs. Until the 1950's. the NOHA junior titleholder had to play its OHA counterpart.