Dekeleia railway station is a station on the Piraeus–Platy railway line in the northern part of the Athens metropolitan area, in the municipality of Acharnes, East Attica, Greece. It was inaugurated on 8 March 1904 and reopened on 6 May 2005. It is owned by OSE, but service are provided by Hellenic Train, through the Athens Suburban Railway from Athens to Chalcis. It is located close Tatoi Airport, however it does not serve the airport.

The railway from Piraeus to Platy is an electrified double-track railway line that connects Athens to northern Greece and the rest of Europe. It constitutes the longest section of the mostly completed higher-speed rail line known as P.A.Th.E./P., which includes Greece's most important rail connection, that between Athens and Thessaloniki. Its northern end is the station of Platy, on the Thessaloniki–Bitola railway. In the south, it connects to the Athens Airport–Patras railway at the Acharnes Railway Center. The line passes through Thebes, Katerini and Larissa, and offers connections to several other cities through branch lines.