Ølstykke station is an S-train railway station serving the district of Ølstykke Stationsby in the northwestern part of the satellite town of Ølstykke-Stenløse northwest of Copenhagen, Denmark. The station is located on the Frederikssund radial of the S-train network of Greater Copenhagen.

The station is located where the railway to Frederikssund crosses the main road between Roskilde and Hillerød. This puts it quite a distance away from the old village of Ølstykke, but a new station town grew up around the station after the railway opened in 1879. Since 2002, the area around the old village has been served by a station of its own, Gammel Toftegård. Gammel Toftegård station later changed name to Egedal station.

Vinge station 3.3 km (2 miles) northwest of Ølstykke station opened 14 December 2020. It is served by the C line.

Preceding station	S-train			Following station
Vinge towards Frederikssund		C		Egedal towards Klampenborg
Frederikssund Terminus		C Evening trains
Vinge One-way operation		H Special early morning trains Departs from Frederikssun at 04:37, 04:57, 05:17 (Mon–Fri)		Egedal towards Østerport

• List of Copenhagen S-train stations
• List of railway stations in Denmark

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• (in Danish) Banedanmark – government agency responsible for maintenance and traffic control of most of the Danish railway network
• (in Danish) DSB – the Danish national train operating company
• (in Danish) Danske Jernbaner – website with information on railway history in Denmark