Minnesota Cities
- Oak Center, MN
- Oak Grove, MN
- Oak Island, MN
- Oak Park, MN
- Oak Park Heights, MN
- Oak Terrace, MN
- Oakbury, MN
- Oakdale, MN
- Oakland, MN
- Oakport, MN
- Oakridge, MN
- Odessa, MN
- Odin, MN
- Ogema, MN
- Ogilvie, MN
- Okabena, MN
- Oklee, MN
- Old Frontenac, MN
- Old Mesaba, MN
- Olga, MN
- Olivia, MN
- Onamia, MN
- Onega, MN
- Onigum, MN
- Opole, MN
- Opstead, MN
- Orchard Garden, MN
- Oreland, MN
- Org, MN
- Orleans, MN
- Ormsby, MN
- Orono, MN
- Oronoco, MN
- Orr, MN
- Orrock, MN
- Orth, MN
- Ortonville, MN
- Osage, MN
- Osakis, MN
- Oshawa, MN
- Oslo, MN
- Oslund, MN
- Osseo, MN
- Oster, MN
- Ostrander, MN
- Otisco, MN
- Otisville, MN
- Otsego, MN
- Ottawa, MN
- Otter Creek, MN
- Ottertail, MN
- Otto, MN
- Outing, MN
- Owanka, MN
- Owatonna, MN
- Oxboro, MN
- Oxlip, MN
- Oylen, MN
