| Abbreviation | Definition |
|---|---|
| MHFO | Minor Hockey Foundation of Ontario |
| MHFO | Minor Hockey Foundation Ontario |
| MHH | Mile High Hockey |
| MHJ | Minnesota Hockey Journal |
| MHL | Maritime Hockey League |
| MHL | Mississauga Hockey League |
| MHL | Montreal Hockey League |
| MHOA | Metroplex Hockey Officials Association |
| MHOA | Minnesota Hockey Officials Association |
| MHUA | Middlesex Hockey Umpires Association |
| MHWC2018BN | Men's Hockey World Cup 2018 Bloggers Network |
| MHWCBN | Men's Hockey World Cup Bloggers Network |
| MIHF | Malaysia Ice Hockey Federation |
| MJHL | Manitoba Junior Hockey League |
| MLH | Major League Hockey |
| MLHR | Minor League Hockey Report |
| MLRH | Major League Roller Hockey |
| MMHA | Meadowvale Minor Hockey Association |
| MMHA | Mission Minor Hockey Association |
| MMHL | Maritime Major Hockey League |