Sabarimala Railway is a proposed 111-kilometre (69 mi)-long railway line in Kerala, India, that will run from Angamaly to Erumeli. It was sanctioned in 1998 by Indian Railways. The line's name comes from the fact that it will provide a railway facility to pilgrims visiting the Sabarimala Temple (which number more than the total population of Kerala).

According to a memorandum of understanding signed between the state of Kerala and the Ministry of Railways on 27 January 2016, commercially viable railway projects will be identified and handed over to the Special Purpose Vehicle (SPV) to be fast-tracked on a 51:49 per cent equity basis. The SPV has discussed an extension to Punalur. The Sabari Railway project has been included under PRAGATI (PM-Proactive Government and Timely Implementation) and is monitored by the Prime Minister's Office.

The proposed railway line will relieve transportation problems in Idukki, Kottayam, and Pathanamthitta districts. Railways have agreed to start the project once the Kerala Rail Development Corporation gives a revised estimate for the project.^{[as of?]}

The Sabarimala Railway is the first phase of a 250-kilometre-long Angamaly–Erumeli–Pathanamthitta–Punalur–Nedumangad–Thiruvananthapuram railway line, which will provide 25 new railway stations in five southern districts of Kerala. On 7 January 2021, the government of Kerala informed the Railway Board of its willingness to share 50% of the cost of the Angamali–Erumeli section. An amount of ₹2,000 crores was allocated to this project by the Government of Kerala through the 2021 state budget. The government has started land acquisition, and established special Thahasildhar offices at Perumbavoor and Palai in 2006 and at Muvattupuzha in 2010 for the process. The railway and revenue department have conducted a joint survey for the land acquisition of this railway line, laid a boundary stone for the acquired land, and notified for land acquisition up to the proposed Ramapuram station in Kottayam district. By 2010, 90% of railway line construction up to Kaladi railway station (a length of 7 kilometres (4.3 mi)) was completed.

The 111-kilometre (69 mi)-long Sabari Railway line was initially proposed in the 1997–98 railway budget. The project connects Angamaly to Erumeli—the gateway to the famous Sabarimala Temple—and serves as a third rail corridor for Kerala State, linking the Idukki district and suburbs in southeastern Kerala to the Indian Railways network. This new line has 14 stations, of which 10 are crossing stations and 4 are halt stations.

There is another proposal for a new line from Erumeli to Punalur for which a reconnaissance survey has been done by the railways. If completed, it will join the Kollam–Sengottai line, becoming a third route to Tamil Nadu from Kerala via that line.

The Sabarimala Railway will traverse culturally, religiously, and commercially essential places and several tourist locations. The road traffic in this area has almost reached a saturation point, resulting in excessive delays and unpredictable roadblocks; the proposed railway line would alleviate these road travel hazards.

Marthoma Mandapam,at Malayattoor shrine hill church where relics of the Apostle St. Thomas are preserved, is also close to Kaladi. The Golden Cross at Kurishumudi is believed to have formed when St. Thomas knelt on a rock and signed a cross with his finger. Another sight at the hill is the permanent footprint and the marks of knees imprinted on the rock, which is believed to be that of St. Thomas. This hill shrine, over time, has emerged as one of the most famous and largest pilgrim centres in the name of St. Thomas in India, and thousands of devotees congregate here to get his blessings. A rice-based industrial cluster is located in Kaladi: 90% of the rice used in Kerala is processed through the industrial units at Kaladi.