| Type: | parish |
| Official Name: | Seixal |
| Region: | Lisbon |
| Metro: | Lisbon |
| District: | Setúbal |
| Municipality: | Seixal |
| Coordinates: | 38.643°N -9.106°W |
| Area Total: | 3.73 |
| Population Total: | 2776 |
| Population As Of: | 2011 |
| Postal Code: | P-2840 Seixal |
| Dissolved: | 2013 |
Seixal is a former civil parish in the municipality (concelho) of Seixal, Lisbon metropolitan area, Portugal. In 2013, the parish merged into the new parish Seixal, Arrentela e Aldeia de Paio Pires.[1] The population in 2011 was 2,776,[2] in an area of 3.73 km2.[3] Its inhabitants are known as "Seixalenses".