| Saint-Pierre | |
| Commune Status: | Subprefecture and commune |
| City Motto: | Fortis fortuna fortior (Latin: 'Courage is stronger than fortune') |
| Map: | Locator map of Saint-Pierre 2018.png |
| Arrondissement: | Saint-Pierre |
| Intercommunality: | Villes solidaires |
| Mayor: | Michel Fontaine[1] |
| Term: | 2020 - 2026 |
| Party: | LR |
| Elevation M: | 19 |
| Elevation Min M: | 0 |
| Elevation Max M: | 1642 |
| Area Km2: | 95.99 |
| Insee: | 97416 |
| Postal Code: | 97410 |
| Image Coat Of Arms: | Blason St-Pierre Réunion DOM.svg |
| Canton: | Saint-Pierre-1, 2 and 3 |
Saint-Pierre (pronounced as /fr/; label=[[Reunionese Creole]]|Sin-Pyè) is the third-largest commune in the French overseas department and region of Réunion. Located on the southwest side of the island, it is the capital of the French Southern and Antarctic Lands. It developed from a port built from 1854 to 1882, which was used for the trade between Asia and Europe. Today, it features 400 sites for fishing and pleasure boats, while most of the commercial traffic moved north to Le Port.
The town of Saint-Pierre is at the beginning of the only major road N3 across the island. From here, the road leads to Le Tampon, La Plaine des Cafres and Bourg Murat. From that area, there is a relatively easy access to the Piton de la Fournaise and a starting point of many excursions.
Saint-Pierre has a hot semi-arid climate (Köppen climate classification BSh), while Ligne Paradis and Ravine des Cabris's climate type has tropical savanna climate (Köppen climate classification Aw) in the southeast of the area. The average annual temperature in Saint-Pierre (downtown) is . The average annual rainfall is with February as the wettest month. The temperatures are highest on average in January, at around, and lowest in July, at around . The highest temperature ever recorded in Saint-Pierre (downtown) was on 20 February 2007; the coldest temperature ever recorded was on 15 September 2020.
Pierrefonds Airport is located 5.5 kilometres outside of the commune. Opened in 1999, this is a small airport for commercial traffic. It has an IATA code of ZSE.
There are no major hotels in Saint-Pierre. Comfort is only available at smaller houses such as converted Creole mansions and villas.
Saint-Pierre is twinned with Beau-Bassin Rose-Hill, Mauritius.