Rhoose Cardiff International Airport railway station is a railway station that serves Cardiff Airport and the village of Rhoose in southeast Wales. A dedicated shuttle bus connects this station with the airport terminal building.

The station is located on the Vale of Glamorgan Line 11+1⁄2 miles (18.5 km) west of Cardiff Central towards Bridgend via Barry and before Llantwit Major. The station opened on 12 June 2005. Passenger services are operated by Transport for Wales as part of the Valley Lines network, an urban rail network serving Cardiff and the surrounding area.

Following its recent reopening with a new name (the station was known as "Rhoose" before it closed in 1964), this station now holds the distinction of having the longest name for a station as recognised by National Rail in the UK, in both English (33 letters, excluding spaces) and Welsh (Maes Awyr Rhyngwladol Caerdydd Y Rhws – 28 letters, as dd, ng and rh are single letters in Welsh).

Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch railway station arguably has a longer name, but the village in question was deliberately given a contrived name for that very reason, and the station is known officially as either Llanfairpwll or Llanfairpwllgwyngyll – the longer name is not shown on National Rail information documents. Historically, there was a second "longer" station name, as before 2007 Golf Halt on the privately-owned Fairbourne Railway (a heritage railway tourist attraction) was known as "Gorsafawddachaidraigddanheddogleddollônpenrhynareurdraethceredigion", a grammatically-incorrect pseudo-Welsh name that was coined for the express purpose of rivaling Llanfairpwllgwyngyll.

From Monday to Saturday, there is an hourly service westbound to Bridgend and an hourly service eastbound to Cardiff Central and onwards to Cardiff Queen Street, Pontypridd and Aberdare. On Sundays there is a two-hourly service in each direction, with eastbound trains terminating at Cardiff Central.

Preceding station	National Rail			Following station
Barry		Transport for Wales Vale Line		Llantwit Major
	Historical railways
Barry Line and station open		Barry Railway Vale of Glamorgan Railway		Aberthaw Line open; station closed

Media related to Rhoose Cardiff International Airport railway station at Wikimedia Commons

• Train times and station information for Rhoose Cardiff International Airport railway station from National Rail
• Rail Link returns after 40 years - BBC News 10 June 2005