| Abbreviation | Definition |
|---|---|
| MCFF | Magic City Fly Fishers |
| MCFF | Mangrove Coast Fly Fishers |
| MCFF | Mossy Creek Fly Fishing |
| MFFA | Manitoba Fly Fishing Association |
| MFL | Mail-in Fishing License |
| MFRA | Marine Fishing Regulation Act |
| MFV | Motorised Fishing Vessel |
| MHFC | Moonlite Hunting and Fishing Club |
| MILF | Man I Love Fishing |
| MKF | Michigan Kayak Fishing |
| MKFS | Mark Kovach Fishing Services |
| MLF | Major League Fishing |
| MLF | Mothers Luv Fishing |
| MRFC | Madison River Fishing Company |
| MSFF | Mid South Fly Fishers |
| MWFF | Mid-Willamette Fly Fishers (Corvallis, OR) |
| NABA | North American Bass Anglers |
| NAFC | North American Fishing Club |
| NAFO | Northwest Atlantic Fishing Organization |
| NAKA | North Alabama Kayak Anglers |