St Davids or St David's (, ,  "David's house") is a city and community (full name St David's and the Cathedral Close) in Pembrokeshire, Wales. Lying on the River Alun on St Davids Peninsula, it is Britain's smallest city in terms of both size and population, the final resting place of Saint David, Wales's patron saint, and the de facto ecclesiastical capital of Wales. St Davids was given city status in the 16th century due to the presence of St David's Cathedral but lost this in 1888. City status was restored in 1994 at the request of Queen Elizabeth II.

Saint David (, ; 500 589) was a Welsh bishop of Menevia during the 6th century; he was later regarded as a saint. He is the  patron saint of Wales. David was a native of Wales, and a relatively large amount of information is known about his life. However, his birth date is uncertain: suggestions range from 462 to 512. He is traditionally believed to be the son of Saint Non and the grandson of Ceredig ap Cunedda, king of Ceredigion. The Welsh annals placed his death 569 years after the birth of Christ, but Phillimore's dating revised this to 601.