Ōsakasayamashi Station (大阪狭山市駅, Ōsakasayamashi-eki) is a passenger railway station located in the city of Ōsakasayama, Osaka Prefecture, Japan, operated by the private railway operator Nankai Electric Railway. It has the station number "NK65".

Ōsakasayamashi Station is served by the Nankai Koya Line, and is 21.8 kilometers from the terminus of the line at Shiomibashi and 21.2 kilometers from Nanba.

The station consists of two ground-level opposed side platforms. The platforms are not connected, and passengers wishing to change platforms must exit the station and re-enter.

1	■ Koya Line (southbound)	for Kōyasan
2	■ Koya Line (northbound)	for Namba

• 
  Station building for Kōyasan
• 
  Ticket gates for Namba
• 
  Platform

«		Service	»
Nankai Electric Railway Koya Line
Limited Express "Koya", "Rinkan": Does not stop at this station
Rapid Express: Does not stop at this station
Express: Does not stop at this station
Sayama		Sub Express		Kongō
Sayama		Semi-Express for Namba		Kongō
Sayama		Local		Kongō

Ōsakasayamashi Station opened on July 5, 1917 as Kawachi-Handa Station (河内半田駅)}. It was renamed Sayamayūenmae Station (狭山遊園前駅)} on April 1, 1950 and to its present name on December 23, 2000.

In fiscal 2019, the station was used by an average of 9,494 passengers daily.

• Ōsakasayama City Hall
• Sayama Jin'ya Ruins
• Sayama pond

• List of railway stations in Japan

• Ōsakasayamashi Station from Nankai Electric Railway website (in Japanese)