NGK
| Acronym | Definition |
|---|---|
| NGK | National Geographic Kids (magazine) |
| NGK | Nederlandse Gereformeerde Kerk (Dutch Reformed Church; South Africa) |
| NGK | New Greek |
| NGK | Nichiyu Giken Kogyo Co., Ltd. (Japan) |
| NGK | Niet-Gesplitst Krediet (Dutch: Not Split Credit) |
| NGK | Nihon Gaishi Kaisha (NGK Insulators, Ltd. Nagoya, Japan) |