| Thủy Nguyên | |
| Official Name: | City of Thủy Nguyên |
| Native Name Lang: | vi |
| Other Name: | Giang Nam Triệu |
| Settlement Type: | Municipal city (Class-3) |
| Pushpin Map: | Vietnam#Southeast Asia#Asia |
| Pushpin Map Caption: | Location of in Vietnam |
| Subdivision Type: | Country |
| Seat Type: | Seat |
| Seat: | Thủy Đường |
| Subdivision Type2: | Region |
| Subdivision Name2: | Red River Delta |
| Subdivision Type3: | City |
| Subdivision Name3: | Haiphong |
| Parts Type: | Subdivision |
| Parts: | 17 wards, 4 rural communes |
| Leader Title1: | Secretary of the Party |
| Leader Name1: | Phạm Văn Thép |
| Leader Title2: | Chairman of People's Council |
| Leader Name2: | Nguyễn Thành Lung |
| Leader Title3: | Chairman of People's Committee |
| Leader Name3: | Nguyễn Huy Hoàng |
| Area Total Km2: | 269.10 |
| Population Total: | 570,000 |
| Population Urban: | 450,000 |
| Population As Of: | 2024 |
| Population Density Km2: | auto |
| Demographics Type1: | Ethnic groups |
| Demographics1 Title1: | Vietnamese |
| Timezone: | ICT |
| Utc Offset: | +07:00 |
| Postal Code Type: | Postal code |
Thủy Nguyên is a municipal city (sub-city) of Haiphong, the third largest municipality of Vietnam. The city is located near Quảng Ninh and Hạ Long Bay, close to the Tiên Lãng International Airport.
The city will be established in 2025 from the old Thủy Nguyên district. The Bạch Đằng River flows through Thủy Nguyên, and the Bính Bridge crosses the Cấm River and connects the district with the city of Hai Phong.
Thủy Nguyên is subdivided into: