- Mister (Mr.) Small's Funhouse
- 400 Lincoln Avenue, Millvale, PA, 15209
- Modern Formations
- 4919 Penn Avenue, Pittsburgh, PA, 15224
- Moe's Southwest Grille (Market Square)
- 210 Forbes Avenue, Pittsburgh, PA, 15222
- Monroeville Convention Center
- 209 Mall Boulevard, Monroeville, PA, 15146
- Monroeville Mall
- 100 Mall Boulevard, Monroeville, PA, 15146
- Monroeville Public Library
- 4000 Gateway Campus Blvd, Monroeville, PA, 15146
- Moondog's Pub
- 378 Freeport Road, Blawnox, PA, 15238
- Moonshot Museum
- 1016 North Lincoln Avenue, Pittsburgh, PA, 15233
- Mosaic Community Church Of Pittsburgh
- 2601 Norwood Avenue, Pittsburgh, PA, 15214
- Mount (Mt.) Lebanon Public Library
- 16 Castle Shannon Blvd., Mt. Lebanon, PA, 15228