The name “Dublin” comes from the Irish Gaelic phrase “Dubh Linn,” which translates to “black pool.” The name originally referred to a deep, dark tidal pool where the River Poddle met the River Liffey.
This historic pool was located right where the Dublin Castle gardens sit today.
In the 9th century, Viking invaders set up a permanent settlement and used this “black pool” to moor their ships. They adapted the Gaelic name into their own Old Norse language as Dyflin, which eventually evolved into the modern English name “Dublin.”
If you travel to Ireland, you will see road signs using the city’s official modern Irish name “Baile Átha Cliath.” This translates to “town of the hurdled ford.”
It refers to an ancient Celtic settlement that sat slightly further upstream from the Viking settlement. This location featured a river crossing point made out of interwoven wooden hurdles.
Over the centuries, the Viking settlement (Dubh Linn) and the Celtic settlement (Baile Átha Cliath) grew and merged into one major city. English speakers kept the name derived from the pool, while Irish speakers kept the name derived from the ford.