Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Oak Ridge Reservoir | Reservoir | 244 | Morris | 41 02 24 N | 074 30 09 W |
| Oak Ridge Reservoir Dam | Dam | 244 | Morris | 41 02 24 N | 074 30 09 W |
| Oak Shade | Populated Place | 27 | Burlington | 39 52 09 N | 074 43 59 W |
| Oak Street Elementary School | School | 24 | Ocean | 40 04 04 N | 074 12 46 W |
| Oak Street Elementay School | School | 41 | Somerset | 40 42 19 N | 074 33 10 W |
| Oak Tree | Populated Place | 40 | Middlesex | 40 34 40 N | 074 22 36 W |
| Oak Tree Grade School (historical) | School | 43 | Middlesex | 40 34 33 N | 074 22 26 W |
| Oak Valley | Populated Place | 19 | Gloucester | 39 48 04 N | 075 09 45 W |
| Oak View Elementary School | School | 60 | Essex | 40 50 14 N | 074 10 22 W |
| Oakcrest High School | School | 23 | Atlantic | 39 27 17 N | 074 40 35 W |
| Oakes Pond (historical) | Reservoir | 41 | Essex | 40 48 02 N | 074 11 25 W |
| Oakeys Brook | Stream | | Middlesex | 40 25 06 N | 074 29 29 W |
| Oakford Lake | Reservoir | 18 | Ocean | 40 04 00 N | 074 31 55 W |
| Oakford Lake Dam | Dam | 18 | Ocean | 40 04 00 N | 074 31 55 W |
| Oakgrove Grange Hall | Building | 175 | Hunterdon | 40 33 16 N | 074 58 04 W |
| Oakgrove School (historical) | School | 52 | Hunterdon | 40 31 39 N | 074 51 21 W |
| Oakhurst | Populated Place | 13 | Monmouth | 40 16 15 N | 074 00 58 W |
| Oakhurst Manor | Populated Place | 11 | Monmouth | 40 15 37 N | 074 00 43 W |
| Oakhurst School | School | 12 | Monmouth | 40 15 50 N | 074 00 46 W |
| Oakland | Populated Place | 66 | Bergen | 41 00 47 N | 074 15 52 W |
| Oakland | Populated Place | 15 | Salem | 39 35 55 N | 075 20 29 W |
| Oakland Brook | Stream | | Gloucester | 39 38 51 N | 074 58 15 W |
| Oakland Farms | Airport | 33 | Cumberland | 39 26 48 N | 075 18 48 W |
| Oakland Mills | Populated Place | 39 | Monmouth | 40 13 59 N | 074 20 40 W |
| Oakland Park | Park | 36 | Middlesex | 40 32 42 N | 074 20 55 W |
| Oaklawn Cemetery | Cemetery | 14 | Gloucester | 39 46 08 N | 075 18 60 W |
| Oaklyn | Populated Place | 7 | Camden | 39 54 03 N | 075 05 05 W |
| Oaks Memorial Church | Church | 41 | Union | 40 42 42 N | 074 20 53 W |
| Oaktree Mall Shopping Center | Locale | 41 | Bergen | 40 51 10 N | 073 58 15 W |
| Oakview School | School | 7 | Gloucester | 39 51 10 N | 075 09 22 W |
| Oakville | Populated Place | 10 | Atlantic | 39 21 43 N | 074 45 24 W |
| Oakwood | Populated Place | 43 | Ocean | 40 08 28 N | 074 15 28 W |
| Oakwood Avenue Elementary School | School | 54 | Essex | 40 45 57 N | 074 13 33 W |
| Oakwood Baptist Church | Church | 20 | Hudson | 40 45 59 N | 074 08 34 W |
| Oakwood Beach | Populated Place | 3 | Salem | 39 33 18 N | 075 31 07 W |
| Oakwood Lake | Reservoir | 104 | Passaic | 41 00 47 N | 074 20 22 W |
| Oakwood Lakes | Populated Place | 12 | Burlington | 39 52 22 N | 074 49 54 W |
| Oakwood Park | Populated Place | 66 | Union | 40 42 34 N | 074 24 25 W |
| Obes Thorofare | Channel | 0 | Atlantic | 39 25 11 N | 074 22 37 W |
| Obhonan Ridgeway Branch | Stream | | Ocean | 40 03 17 N | 074 21 28 W |
| Ocean Acres | Populated Place | 36 | Ocean | 39 44 36 N | 074 16 52 W |
| Ocean Acres Elementary School | School | 32 | Ocean | 39 44 33 N | 074 16 55 W |
| Ocean Acres Golf Course | Locale | 19 | Ocean | 39 43 56 N | 074 16 11 W |
| Ocean Avenue Baptist Church | Church | 41 | Hudson | 40 42 41 N | 074 04 32 W |
| Ocean Avenue Elementary School | School | 3 | Monmouth | 40 26 10 N | 074 07 03 W |
| Ocean Beach | Populated Place | 1 | Ocean | 39 58 53 N | 074 03 58 W |
| Ocean Center Vocational School | School | 14 | Ocean | 39 47 44 N | 074 14 49 W |
| Ocean City | Civil | 1 | Cape May | 39 16 11 N | 074 36 11 W |
| Ocean City | Populated Place | 2 | Cape May | 39 16 39 N | 074 34 29 W |
| Ocean City Municipal Airport | Airport | 1 | Cape May | 39 15 49 N | 074 36 25 W |
| Ocean Community Cemetery | Cemetery | 18 | Ocean | 39 47 41 N | 074 13 41 W |
| Ocean County | Civil | 22 | Ocean | 39 54 00 N | 074 12 59 W |
| Ocean County College | School | 18 | Ocean | 40 00 28 N | 074 09 57 W |
| Ocean County Courthouse | Building | 10 | Ocean | 39 57 11 N | 074 11 39 W |
| Ocean County Golf Course at Atlantis | Locale | 9 | Ocean | 39 34 37 N | 074 21 23 W |
| Ocean County Golf Course at Forge Pond | Locale | 1 | Ocean | 40 04 11 N | 074 08 37 W |
| Ocean County Library | Building | 9 | Ocean | 39 57 09 N | 074 11 44 W |
| Ocean County Mall Shopping Center | Locale | 16 | Ocean | 39 58 52 N | 074 10 42 W |
| Ocean County Memorial Park | Cemetery | 18 | Ocean | 40 01 38 N | 074 10 51 W |
| Ocean County Park | Park | 14 | Ocean | 40 05 41 N | 074 10 59 W |
| Ocean Gate | Populated Place | 1 | Ocean | 39 55 36 N | 074 08 01 W |
| Ocean Gate Elementary School | School | 2 | Ocean | 39 55 26 N | 074 08 34 W |
| Ocean Gate Post Office | Post Office | 2 | Ocean | 39 55 37 N | 074 08 25 W |
| Ocean Grove | Populated Place | 5 | Monmouth | 40 12 43 N | 074 00 23 W |
| Ocean Grove Auditorium | Building | 6 | Monmouth | 40 12 51 N | 074 00 22 W |
| Ocean Grove Post Office | Post Office | 5 | Monmouth | 40 12 45 N | 074 00 24 W |
| Ocean Heights | Populated Place | 6 | Atlantic | 39 19 45 N | 074 35 15 W |
| Ocean Heights Church | Church | 17 | Atlantic | 39 23 49 N | 074 38 51 W |
| Ocean Heights Station | Locale | 6 | Atlantic | 39 19 45 N | 074 35 14 W |
| Ocean Residential Group Center | Hospital | 4 | Ocean | 39 50 26 N | 074 11 05 W |
| Ocean Road Elementary School | School | 6 | Ocean | 40 05 00 N | 074 03 43 W |
| Ocean Township Elementary School | School | 14 | Monmouth | 40 15 46 N | 074 01 45 W |
| Ocean Township High School | School | 16 | Monmouth | 40 15 59 N | 074 01 51 W |
| Ocean Township Industrial Park | Locale | 30 | Monmouth | 40 14 16 N | 074 02 36 W |
| Ocean Township Intermediate Middle School | School | 23 | Monmouth | 40 15 40 N | 074 03 49 W |
| Ocean View | Populated Place | 6 | Cape May | 39 10 35 N | 074 44 01 W |
| Oceanic | Populated Place | 3 | Monmouth | 40 22 40 N | 074 00 38 W |
| Oceanic Bridge | Bridge | -4 | Monmouth | 40 22 53 N | 074 00 51 W |
| Oceanport | Populated Place | 6 | Monmouth | 40 19 05 N | 074 00 54 W |
| Oceanport Creek | Stream | | Monmouth | 40 19 29 N | 074 01 10 W |
| Oceanview Church | Church | 12 | Monmouth | 40 25 14 N | 074 03 50 W |
| Oceanville | Populated Place | 12 | Atlantic | 39 28 16 N | 074 27 38 W |
| Octagon | Building | 118 | Morris | 40 46 54 N | 074 26 11 W |
| Ogden | Populated Place | 4 | Gloucester | 39 48 42 N | 075 12 08 W |
| Ogden Creek | Stream | | Cumberland | 39 20 43 N | 075 16 02 W |
| Ogden Memorial Presbyterian Church | Church | 41 | Morris | 40 44 30 N | 074 23 02 W |
| Ogdens Creek | Stream | | Cumberland | 39 14 11 N | 075 06 29 W |
| Ogdensburg | Populated Place | 205 | Sussex | 41 04 54 N | 074 35 33 W |
| Ogdensburg Elementary School | School | 41 | Sussex | 41 04 47 N | 074 35 38 W |
| Oheb Sholem Cemetery | Cemetery | 18 | Union | 40 41 43 N | 074 12 45 W |
| Ohrbach Arena | Building | 154 | Bergen | 40 58 43 N | 073 55 15 W |
| Olam Cemetery | Cemetery | 15 | Ocean | 40 03 11 N | 074 10 59 W |
| Olcott Square | Park | 41 | Somerset | 40 43 06 N | 074 34 10 W |
| Old Bergen Church | Church | 41 | Hudson | 40 43 38 N | 074 04 03 W |
| Old Bogs | Swamp | 5 | Cape May | 39 10 14 N | 074 46 25 W |
| Old Brick Reformed Church | Church | 50 | Monmouth | 40 20 05 N | 074 14 24 W |
| Old Bridge | Populated Place | 4 | Middlesex | 40 24 53 N | 074 21 56 W |
| Old Bridge Airport | Airport | 22 | Middlesex | 40 19 47 N | 074 20 47 W |
| Old Bridge Airport Raceway Park | Locale | 19 | Middlesex | 40 20 04 N | 074 20 58 W |
| Old Bridge Baptist Church | Church | 5 | Middlesex | 40 24 57 N | 074 21 54 W |
| Old Bridge High School | School | 24 | Middlesex | 40 24 01 N | 074 18 02 W |
| Old Bridge Regional Hospital | Hospital | 24 | Middlesex | 40 22 59 N | 074 19 23 W |
| Old Bridge Seaplane Base | Airport | 18 | Middlesex | 40 19 55 N | 074 20 47 W |
| Old Bridge Township Municipal Complex | Locale | 25 | Middlesex | 40 24 14 N | 074 17 51 W |
| Old Bridge Waterfront Park | Park | 1 | Middlesex | 40 27 34 N | 074 14 49 W |
| Old Camden Cemetery | Cemetery | 6 | Camden | 39 56 02 N | 075 06 32 W |
| Old Canal | Canal | 1 | Gloucester | 39 49 20 N | 075 20 36 W |
| Old Cemetery | Cemetery | 12 | Somerset | 40 33 35 N | 074 36 49 W |
| Old Church | Locale | 41 | Middlesex | 40 17 29 N | 074 27 47 W |
| Old Colony Plaza Shopping Center | Locale | 41 | Hudson | 40 43 06 N | 074 03 09 W |