加的夫（英语：Cardiff，威尔士语：Caerdydd），是英联邦联合王国威尔斯首府，英国第十六大城市，威尔斯亲王国最大城市，威尔士议会所在地。人口约519,700，面积190平方公里。

加的夫本是威尔斯南部海岸的一个小镇，19世纪成为重要海港，以运送煤炭到各主要工业重镇为主，1905年被列作城市，1955年成为威尔斯公国首府。

Cardiff [ˈkɑːdɪf] (walisisch Caerdydd [kairˈdiːð]) ist die Hauptstadt und bevölkerungsreichste Stadt von Wales im Vereinigten Königreich Großbritannien und Nordirland. Die Stadt bildet eine der 22 walisischen Principal Areas und besitzt den Status einer City. In der Stadt leben 346.090 Menschen, in der Metropolregion über 1.100.000 Einwohner.

カーディフ（ウェールズ語: Caerdydd、英: Cardiff）は、ウェールズの首都。人口は305,340人(2001年)で、ウェールズで最大の都市である。ウェールズの南東部に位置し、ロンドンからは約250kmの距離にある。ウェールズ議会が設置されている。 

Cardiff (/ˈkɑːrdɪf/ ( listen); Welsh: Caerdydd [kairˈdiːð, kɑːɨrˈdɨːð] ( listen)) is the capital of, and largest city in, Wales, and the eleventh-largest city in the United Kingdom. It is Wales's chief commercial centre, the base for most national cultural and sporting institutions, the Welsh national media, and the seat of the National Assembly for Wales. The unitary authority area's 2017 population was estimated to be 362,756.[1] Cardiff is a significant tourist centre and the most popular visitor destination in Wales with 21.3 million visitors in 2017.[5] In 2011, Cardiff was ranked sixth in the world in National Geographic's alternative tourist destinations.[6]

Cardiff is the county town of the historic county of Glamorgan (and later South Glamorgan). Cardiff is part of the Eurocities network of the largest European cities.[7] A small town until the early 19th century, its prominence as a major port for the transport of coal following the arrival of industry in the region contributed to its rise as a major city. The Cardiff Built-up Area covers a slightly larger area outside the county boundary and includes the towns of Dinas Powys and Penarth. In 1905, Cardiff was made a city and proclaimed the capital of Wales in 1955.

Since the 1980s, Cardiff has seen significant development. A new waterfront area at Cardiff Bay contains the Senedd building, home to the Welsh Assembly and the Wales Millennium Centre arts complex. Current developments include the continuation of the redevelopment of the Cardiff Bay and city centre areas with projects such as the Cardiff International Sports Village, a BBC drama village,[8] and a new business district in the city centre.[9] Sporting venues in the city include the Principality Stadium—the national stadium and the home of the Wales national rugby union team—Sophia Gardens (the home of Glamorgan County Cricket Club), Cardiff City Stadium (the home of Cardiff City football team and the Wales football team), Cardiff International Sports Stadium (the home of Cardiff Amateur Athletic Club), Cardiff Arms Park (the home of Cardiff Blues and Cardiff RFC rugby union teams) and Ice Arena Wales (the home of Cardiff Devils ice hockey team). The city hosted the 1958 British Empire and Commonwealth Games. The city was awarded the title of European City of Sport twice, due to its role in hosting major international sporting events: first in 2009 and again in 2014.[10] The Principality Stadium hosted 11 football matches as part of the 2012 Summer Olympics, including the games' opening event and the men's bronze medal match.[11]

Cardiff (en gallois Caerdydd /kairˈdiːð, /kaˑɨrˈdɨːð/) est la capitale et la plus grande ville du pays de Galles (Royaume-Uni), avec environ 346 100 habitants. Elle est située dans les Galles du Sud, sur les bords de la rivière Taf, dans le comté historique de Glamorgan (Morgannwg en gallois). Depuis 1996, elle est gouvernée par le conseil du comté de Cardiff. Depuis 1905, Cardiff possède officiellement le statut de cité. Archevêché catholique depuis 1916 ayant pour siège la cathédrale Saint-David, la cathédrale de Llandaff, anglicane, est située dans un faubourg occidental réuni à la ville en 1922.

Cardiff (in gallese: Caerdydd) è una città del Regno Unito, capitale e più importante centro del Galles. Situata sulla baia di Bristol alla foce del Taff, nel sud-est del Galles e vicino alla frontiera con l'Inghilterra, si è sviluppata enormemente durante il XIX secolo grazie all'industria mineraria e al suo porto fortemente trafficato. Dal censimento del 2001 risulta che Cardiff ha una popolazione di 305.340 abitanti, classificandosi come sedicesima città in ordine di grandezza del Regno Unito. 

Cardiff ( /ˈkɑrdɪf/ (?·i), en galés, Caerdydd) es la capital de Gales, así como el centro comercial, cultural, deportivo, educativo y mediático más importante del país. Se trata además de una autoridad unitaria1​2​ situada en el sureste de Gales, a orillas del canal de Brístol y cerca de la frontera inglesa. La ciudad se expandió enormemente durante el siglo XIX debido a la actividad minera y al tráfico de sus puertos.

Según las estimaciones oficiales del ayuntamiento obtenidas con respecto al censo de 2006, la población de Cardiff era de 317 500 habitantes,3​ siendo entonces la decimosexta ciudad más habitada del Reino Unido. Cardiff es un importante centro turístico con 11,7 millones de visitantes en 2006.4​

Ка́рдифф, традиционно Карди́фф[1] (англ. Cardiff [ˈkɑːdɪf] слушать, валл. Caerdydd [kaɨrˈdɪð] слушать) — крупнейший город и столица Уэльса. Является унитарной административной единицей со статусом сити, который был получен в 1905 году благодаря бурному росту промышленности в регионе и использованию Кардиффа в качестве главного порта для транспортировки угля из Уэльса. В 1955 году город объявлен столицей Уэльса.