Flitwick railway station is in the centre of Flitwick, in Bedfordshire, England. The station is situated on the Midland Main Line. The station is managed by Thameslink, who operate all trains serving it, and is served by Thameslink route services between Bedford and Brighton. As well as Flitwick itself, the station also serves the adjoining town of Ampthill, which no longer has its own station.

From Flitwick, trains travel north and serve Bedford and southbound trains serve Luton, Luton Airport Parkway, Harpenden, St Albans, London St Pancras, Gatwick Airport and Brighton.

It was built by the Midland Railway in 1870 on its extension to St. Pancras. The original station buildings were restored in the early 1980s.

There were originally platforms for two lines. This remained the case when the line was quadrupled. The up goods opened in 1893 and extended to Harlington in 1894; and the down goods opened in 1895. It was not until 1960 that British Railways added extra platforms to cater for extended stopping services between Bedford and London.

All services at Flitwick are operated by Thameslink using Class 700 EMUs.

The typical off-peak service in trains per hour is:

During the peak hours, the station is served by additional services to and from Rainham, Sutton, East Grinstead. A number of peak hour services run non-stop between Flitwick and Luton.

The station is also served by a half-hourly night service between Bedford and Three Bridges on Sunday to Friday nights.