| NATCO | North American Transplant Coordinator Organization |
|---|---|
| NISO | National Information Standards Organization |
| NOAPP | National Organization of Adolescent Pregnancy and Parenting |
| NOD | Naito-Oyanagi disease; National Organization on Disability; nodular melanoma; nonobese diabetic; not... |
| NORML | National Organization for the Reform of Marijuana Laws |