| Type: | parish |
| Official Name: | Guimarei |
| Region: | Norte |
| Metro: | Porto |
| District: | Porto |
| Municipality: | Santo Tirso |
| Coordinates: | 41.3028°N -8.4869°W |
| Area Total: | 6.43 |
| Population Total: | 736 |
| Population As Of: | 2001 |
| Dissolved: | 2013 |
Guimarei is a former civil parish in the municipality of Santo Tirso, Portugal. In 2013, the parish merged into the new parish Lamelas e Guimarei.[1] It has a population of 736 (2001 census), and an area of 6.43 km2. It is located 3 km south of the center of the city of Santo Tirso in the Leça Valley.
It is a residential place with some people working in agriculture.