| Mo Chau | |
| Native Name: | 磨洲 |
| Native Name Link: | Chinese language |
| Map: | Hong Kong |
| Area Km2: | 0.04 |
| Country Admin Divisions Title: | Districts |
| Country Admin Divisions: | Tai Po District |
Mo Chau, or Moon Island is an island in Tolo Channel, in the Tai Po District of Hong Kong.