| Riddlesdown | |
| Fare Zone: | 6 |
| Events1: | Opened |
| Years1: | 5 June 1927 |
| Platforms: | 2 |
| Dft Category: | E |
| Railexits0405: | 0.227 |
| Railexits0506: | 0.221 |
| Railexits0607: | 0.334 |
| Railexits0708: | 0.345 |
| Railexits0809: | 0.339 |
| Railexits0910: | 0.342 |
| Railexits1011: | 0.355 |
| Railexits1112: | 0.360 |
| Railexits1213: | 0.361 |
| Railexits1314: | 0.368 |
| Railexits1415: | 0.406 |
| Railexits1516: | 0.397 |
| Railexits1617: | 0.338 |
| Railexits1718: | 0.358 --> |
| Railexits1819: | 0.383 |
| Railexits1920: | 0.392 |
| Raillowexits2021: | 71,042 |
| Railexits2122: | 0.175 |
| Railexits2223: | 0.221 |
| Railcode: | RDD |
| Coordinates: | 51.3323°N -0.0996°W |
| Symbol: | rail |
Riddlesdown railway station is on the Oxted line serving Riddlesdown in the London Borough of Croydon, south London. It is in Travelcard Zone 6, from, although off peak trains run to and from . The station is managed by Southern.
Platform 1 is the platform for trains towards Croydon and London.
Platform 2 is the platform towards East Grinstead.
The station is unusual amongst suburban London stations in that there is no means of crossing between the platforms. The platforms are reached via separate footpaths from Lower Barn Road, either side of the bridge that takes the railway over the road. The ticket office is on Platform 1.
On the London-bound platform 1, there is a staffed ticket office (open for only part of the day) and waiting room.
There are self-service ticket machines and Oyster scanners on both platforms.
Off-peak, all services at Riddlesdown are operated by Southern using EMUs.
The typical off-peak service in trains per hour is:
During the peak hours and on weekends, the service is increased to 2 tph in each direction.
During the peak hours, there are also Thameslink operated services between East Grinstead, and . These services are operated using EMUs.