Rainham railway station is on the London, Tilbury and Southend line, serving the town of Rainham in the London Borough of Havering, east London. Historically in the county of Essex, in official literature the station is sometimes shown as Rainham (Essex) in order to distinguish it from the station of the same name in Kent.

It is 12 miles 54 chains (20.4 km) down the line from London Fenchurch Street and it is situated between Dagenham Dock to the west and Purfleet to the east. Its three-letter station code is RNM and it is within Travelcard zone 6.

It was opened in 1854. The station and all trains serving it are currently operated by c2c.

The station was opened in 1854 on the original route of the London, Tilbury and Southend Railway from London to Tilbury, which was extended to Southend-on-Sea in 1856 and Shoeburyness in 1884. In 1888 a second, more direct, route to Southend was completed several miles to the north.

The station is located on Ferry Lane, close to the junction with Wennington Road. Major industrial works surround the station, as does Rainham Creek, a local industrial river. Access is provided from the station building to the country-bound platform; in order to access the London-bound platforms, a pedestrian bridge must be crossed. There are ticket barriers at the front entrance to the platform, restricting platform access to ticket-holders only.

A number of level crossings are situated on the line between Barking and Grays. The roads served by the crossings have now been severed by the High Speed 1 line between Ebbsfleet and London St. Pancras, but the level crossings are still in situ, such as the one on Ferry Lane. This can be used to access the London-bound platform. A number of footbridges and road bridges have been built to replace them.

There is access to the Rainham Marshes via a footbridge immediately south of the station, although Purfleet station is the closest railway station.

Beam Park railway station is a new station under construction to the west of Rainham.

As of the June 2024 timetable the typical Monday to Friday off-peak service is:

• 2 tph (trains per hour) westbound to London Fenchurch Street
• 2 tph eastbound to Grays

London Buses routes 103, and 372 serve the station directly. London Buses routes 165, 287 and London Buses school route 652 serve the station from Rainham War Memorial stop.

• Train times and station information for Rainham railway station (London) from National Rail

Preceding station	National Rail			Following station
Dagenham Dock		c2c London, Tilbury and Southend line via Rainham		Purfleet