Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Osbornsville Elementary School | School | 5 | Ocean | 40 02 40 N | 074 07 24 W |
| Osceola Post Office | Post Office | 353 | Warren | 41 58 56 N | 077 20 33 W |
| Osceola Presbyterian Church | Church | 355 | Warren | 41 59 04 N | 077 20 30 W |
| Osceola United Methodist Church | Church | 356 | Warren | 41 59 02 N | 077 20 39 W |
| Osterman Heliport | Airport | 62 | Somerset | 40 29 10 N | 074 44 07 W |
| Oswego Dam | Dam | 16 | Burlington | 39 43 54 N | 074 29 33 W |
| Oswego Lake | Reservoir | 14 | Burlington | 39 43 35 N | 074 29 33 W |
| Oswego River | Stream | | Burlington | 39 39 29 N | 074 31 40 W |
| Othello | Populated Place | 6 | Cumberland | 39 24 45 N | 075 20 49 W |
| Oti Heliport | Airport | 148 | Warren | 40 48 22 N | 074 59 24 W |
| Ottens Basin | Basin | -4 | Cape May | 39 00 26 N | 074 48 13 W |
| Ottens Canal | Canal | 0 | Cape May | 39 00 07 N | 074 48 36 W |
| Ottens Harbor | Bay | 0 | Cape May | 38 59 28 N | 074 49 42 W |
| Otter Brook | Stream | | Camden | 39 50 10 N | 075 03 38 W |
| Otter Creek | Stream | | Cape May | 39 16 50 N | 074 42 32 W |
| Otter Pond | Lake | 1 | Atlantic | 39 32 49 N | 074 30 15 W |
| Our Lady Help of the Christians Catholic Church | Church | 41 | Essex | 40 45 52 N | 074 12 52 W |
| Our Lady Help of the Christians Parochial School | School | 50 | Essex | 40 45 54 N | 074 12 52 W |
| Our Lady of All Souls Church | Church | 41 | Essex | 40 45 59 N | 074 12 03 W |
| Our Lady of Assumption Church | Church | 41 | Hudson | 40 39 59 N | 074 07 19 W |
| Our Lady of Czestochowa Church | Church | 41 | Hudson | 40 42 54 N | 074 02 19 W |
| Our Lady of Czestochowa Church | Church | 41 | Hudson | 40 44 42 N | 074 09 29 W |
| Our Lady of Czestochowa School | School | 41 | Hudson | 40 42 58 N | 074 02 31 W |
| Our Lady of Fatima Church | Church | 41 | Essex | 40 43 49 N | 074 09 45 W |
| Our Lady of Fatima Church | Church | 41 | Hudson | 40 48 19 N | 074 00 39 W |
| Our Lady of Fatima Roman Catholic Church | Church | 18 | Middlesex | 40 34 43 N | 074 27 30 W |
| Our Lady of Fatima School | School | 18 | Middlesex | 40 34 43 N | 074 27 30 W |
| Our Lady of Good Counsel Grade School | School | 41 | Essex | 40 46 29 N | 074 10 52 W |
| Our Lady of Grace Church | Church | 41 | Bergen | 40 48 58 N | 073 59 53 W |
| Our Lady of Grace Church | Church | 41 | Hudson | 40 44 32 N | 074 02 01 W |
| Our Lady of Grace School | School | 30 | Camden | 39 50 46 N | 075 01 15 W |
| Our Lady of Hungary Church | Church | 14 | Middlesex | 40 31 19 N | 074 15 60 W |
| Our Lady of Liberia Church | Church | 41 | Hudson | 40 47 25 N | 074 01 20 W |
| Our Lady of Liberia School | School | 41 | Hudson | 40 47 24 N | 074 01 22 W |
| Our Lady of Lourdes Church | Church | 41 | Essex | 40 47 41 N | 074 14 04 W |
| Our Lady of Lourdes Hospital Heliport | Airport | 9 | Camden | 39 55 36 N | 075 05 49 W |
| Our Lady of Lourdes Infirmary | Hospital | 41 | Bergen | 40 52 00 N | 074 05 43 W |
| Our Lady of Lourdes Roman Catholic Church | Church | 41 | Passaic | 40 55 46 N | 074 09 40 W |
| Our Lady of Lourdes School | School | 82 | Essex | 40 47 39 N | 074 14 03 W |
| Our Lady of Lourdes School | School | 24 | Middlesex | 40 27 24 N | 074 26 34 W |
| Our Lady of Lourdes School | School | 27 | Passaic | 40 55 47 N | 074 09 37 W |
| Our Lady of Mercy Church | Church | 41 | Bergen | 41 01 52 N | 074 02 42 W |
| Our Lady of Mercy Roman Catholic Church | Church | 41 | Somerset | 40 33 19 N | 074 31 43 W |
| Our Lady of Mercy School | School | 41 | Bergen | 41 01 53 N | 074 02 46 W |
| Our Lady of Mercy School | School | 3 | Hudson | 40 42 05 N | 074 05 57 W |
| Our Lady of Mount Carmel Catholic Church | Church | 8 | Middlesex | 40 33 03 N | 074 16 45 W |
| Our Lady of Mount Carmel Church | Church | 41 | Bergen | 40 48 33 N | 074 08 05 W |
| Our Lady of Mount Carmel Church | Church | 41 | Essex | 40 48 41 N | 074 12 30 W |
| Our Lady of Mount Carmel Church | Church | 41 | Essex | 40 48 46 N | 074 10 03 W |
| Our Lady of Mount Carmel Church | Church | 41 | Essex | 40 43 21 N | 074 09 42 W |
| Our Lady of Mount Carmel Church | Church | 41 | Hudson | 40 39 46 N | 074 07 02 W |
| Our Lady of Mount Carmel Church | Church | 41 | Hudson | 40 44 10 N | 074 04 21 W |
| Our Lady of Mount Carmel Church | Church | 172 | Morris | 40 54 28 N | 074 24 50 W |
| Our Lady of Mount Carmel Church | Church | 41 | Passaic | 40 51 33 N | 074 07 21 W |
| Our Lady of Mount Carmel Roman Catholic Church | Church | 41 | Bergen | 40 55 25 N | 073 57 50 W |
| Our Lady of Mount Carmel School | School | 17 | Bergen | 40 55 24 N | 073 57 49 W |
| Our Lady of Mount Carmel School | School | 41 | Hudson | 40 39 47 N | 074 07 04 W |
| Our Lady of Mount Carmel School | School | 7 | Monmouth | 40 13 12 N | 074 01 11 W |
| Our Lady of Mount Carmel School | School | 180 | Morris | 40 54 30 N | 074 24 49 W |
| Our Lady of Mount Carmel School | School | 14 | Passaic | 40 51 32 N | 074 07 25 W |
| Our Lady of Mount Virgin Roman Catholic Church | Church | 14 | Middlesex | 40 34 18 N | 074 29 52 W |
| Our Lady of Mount Virgin School | School | 14 | Middlesex | 40 34 14 N | 074 29 56 W |
| Our Lady of Peace Church | Church | 34 | Middlesex | 40 31 17 N | 074 16 32 W |
| Our Lady of Peace Church | Church | 35 | Middlesex | 40 31 47 N | 074 18 60 W |
| Our Lady of Peace Church | Church | 41 | Union | 40 42 10 N | 074 24 21 W |
| Our Lady of Peace Elementary School | School | 33 | Middlesex | 40 31 16 N | 074 16 32 W |
| Our Lady of Peace Parochial School | School | 34 | Middlesex | 40 31 47 N | 074 19 04 W |
| Our Lady of Peace School | School | 65 | Union | 40 42 09 N | 074 24 22 W |
| Our Lady of Perpetual Help Church | Church | 2 | Ocean | 39 56 35 N | 074 04 26 W |
| Our Lady of Pompeii Church | Church | 27 | Cumberland | 39 27 12 N | 074 56 23 W |
| Our Lady of Pompeii Roman Catholic Church | Church | 41 | Passaic | 40 54 33 N | 074 11 15 W |
| Our Lady of Princeton Convent | Church | 114 | Mercer | 40 22 34 N | 074 42 06 W |
| Our Lady of Sorrows Church | Church | 41 | Bergen | 40 53 04 N | 074 07 14 W |
| Our Lady of Sorrows Church | Church | 41 | Hudson | 40 45 27 N | 074 08 50 W |
| Our Lady of Sorrows Church | Church | 41 | Hudson | 40 42 27 N | 074 04 36 W |
| Our Lady of Sorrows Roman Catholic Church | Church | 41 | Essex | 40 44 30 N | 074 15 32 W |
| Our Lady of Sorrows School | School | 58 | Essex | 40 44 32 N | 074 15 33 W |
| Our Lady of Sorrows School | School | 175 | Essex | 40 47 07 N | 074 15 38 W |
| Our Lady of the Holy Rosary Church | Church | 20 | Middlesex | 40 30 57 N | 074 16 20 W |
| Our Lady of the Lake Church | Church | 41 | Essex | 40 49 51 N | 074 14 47 W |
| Our Lady of the Lake Church | Church | 284 | Morris | 40 55 46 N | 074 38 16 W |
| Our Lady of the Lake Church | Church | 41 | Sussex | 41 02 01 N | 074 39 51 W |
| Our Lady of the Valley Church | Church | 41 | Essex | 40 45 54 N | 074 14 55 W |
| Our Lady of Victories Church | Church | 41 | Bergen | 40 59 08 N | 073 58 53 W |
| Our Lady of Victories Church | Church | 41 | Hudson | 40 42 52 N | 074 04 59 W |
| Our Lady of Victories Roman Catholic Church | Church | 20 | Middlesex | 40 27 30 N | 074 21 36 W |
| Our Lady of Victories Roman Catholic Church | Church | 41 | Passaic | 40 55 09 N | 074 10 06 W |
| Our Lady of Victories Roman Catholic School | School | 19 | Middlesex | 40 27 29 N | 074 21 36 W |
| Our Lady of Victories School | School | 41 | Hudson | 40 42 57 N | 074 05 06 W |
| Our Lady Queen of Peace Church | Church | 41 | Passaic | 41 09 17 N | 074 21 17 W |
| Our Ladys Heliport | Airport | 9 | Burlington | 39 58 58 N | 074 49 41 W |
| Our Redeemer Lutheran Church | Church | 36 | Middlesex | 40 31 49 N | 074 18 58 W |
| Our Saviour's Lutheran Church | Church | 41 | Bergen | 40 56 36 N | 073 57 25 W |
| Our Saviour's Lutheran Church | Church | 32 | Middlesex | 40 33 48 N | 074 21 10 W |
| Our Saviours Church | Church | 27 | Bergen | 40 53 07 N | 074 00 32 W |
| Our Saviours Lutheran Church (historical) | Church | 15 | Middlesex | 40 30 26 N | 074 16 04 W |
| Outcalt | Populated Place | 10 | Middlesex | 40 22 38 N | 074 24 27 W |
| Outer Island | Island | 0 | Cape May | 39 02 12 N | 074 47 05 W |
| Outerbridge Crossing | Bridge | 0 | Middlesex | 40 31 29 N | 074 14 39 W |
| Outerbridge Reach | Channel | 0 | Middlesex | 40 31 28 N | 074 14 54 W |
| Outlets at the Cove Shopping Center | Locale | 41 | Hudson | 40 47 46 N | 074 04 06 W |
| Oval Park Heliport | Airport | 45 | Essex | 40 45 36 N | 074 12 04 W |
| Overbrook | Populated Place | 21 | Camden | 39 49 04 N | 074 59 17 W |
| Overbrook Hospital | Hospital | 136 | Essex | 40 51 02 N | 074 14 35 W |
| Overbrook Regional High School | School | 22 | Camden | 39 48 53 N | 074 59 31 W |
| Overfalls Shoal | Bar | -10 | Cape May | 38 50 33 N | 075 00 49 W |
| Overfalls Shoal | Bar | -6 | Cape May | 38 51 26 N | 074 59 33 W |
| Overfalls Shoal | Bar | -10 | Cape May | 38 50 29 N | 075 00 51 W |
| Overfalls Shoal | Bar | -6 | Cape May | 38 52 06 N | 074 58 44 W |
| Overlook | Populated Place | 120 | Union | 40 42 45 N | 074 21 06 W |