| Official Name: | Port-aux-Français |
| Native Name: | Port-aux-Français |
| Other Name: | Port of France Port to the French |
| Settlement Type: | Scientific Research Base |
| Pushpin Map: | France Kerguelen#Indian Ocean |
| Pushpin Map Caption: | Location in Kerguelen Islands & Indian Ocean |
| Pushpin Relief: | yes |
| Coordinates: | -49.35°N 70.2189°W |
| Subdivision Type: | Country |
| Subdivision Name: | France |
| Subdivision Type1: | Territory |
| Subdivision Name1: | TAAF |
| Subdivision Type2: | District |
| Subdivision Name2: | Kerguelen Islands |
| Established Title: | Established |
| Unit Pref: | Metric |
| Area Total Km2: | 0.70 |
| Area Land Km2: | 0.70 |
| Elevation M: | 10 |
| Population Blank1 Title: | Summer |
| Population Blank1: | 120 |
| Population Blank2 Title: | Winter |
| Population Blank2: | 45 |
| Utc Offset: | +5 |
| Code1 Name: | UN/LOCODE |
| Code1 Info: | TF PFR |
| Blank Name Sec1: | Active times |
| Blank Info Sec1: | All year-round |
| Blank1 Name Sec1: | Status |
| Blank1 Info Sec1: | Operational |
| Blank Name Sec2: | Activities |
| Website: | taaf.fr |
Port-aux-Français (in French pronounced as /pɔʁ o fʁɑ̃sɛ/) is the main settlement of the Kerguelen Islands, and French Southern and Antarctic Lands, in the south Indian Ocean.
The settlement is located on the shore of the Gulf of Morbihan. About 45 residents spend the winter there; the group can reach over 120 people in summer. The place was chosen in 1949 by the head of mission Pierre Sicaud because of its sheltered location which was suitable for the construction of an air runway, though this was never built.
From 1955 to 1957, a French slaughterhouse company, SIDAP, built an elephant seal processing plant equipped with Australian machinery. The factory opened its doors just after the wedding of the director, Marc Péchenart, and Martine Raulin on 16 December 1957. This was the first marriage ever celebrated on the islands. The factory closed in 1960, and the equipment was sent to Réunion in 2005.
Port-aux-Français has a shallow seaport which allows the unloading of supply ships (usually the Marion Dufresne) with barges shuttling to the quay.
The settlement, in addition to the logistical facilities for its own operation, hosts scientific laboratories (biology, geophysics), technical stations (such as meteorology, telecommunications and satellite tracking), a cinema and a small medical centre. There is also a small Catholic ChurchNotre-Dame des Ventsin the settlement.
The base of Port-aux-Français is equipped with a marigraphic station, having three measuring devices:
The two marigraphs and the radar send data to a local server, which relays them hourly to the Internet via the Argos satellite system.
Port-aux-Français has an ocean-moderated mild tundra climate (Köppen climate classification ET).[1] Temperatures (without windchill) tend to remain fairly stable throughout the year, rarely reaching over 18C or falling below -8C.[2] The average temperature in February, the warmest month, is 7.5C with a maximum of 11.5C during the day and 4.3C during the night. In winter, July and August are the coldest months, averaging 4.8C5C during the day and -0.8C at night.
Snowfall is possible in all months, though more common in winter. The climate is windier than in most places, with a recorded gust of .[3] The lowest recorded temperature was -9.5C on 11 August 2014, which beats the old record of -9.4C set in June 1953.[4] The highest temperature was 23C on 30 January 1959.[5]