Cochin Shipyard Limited (CSL) is the largest shipbuilding and maintenance facility in India. It is part of a line of maritime-related facilities in the port-city of Kochi, in the state of Kerala, India.

Of the services provided by the shipyard are building platform supply vessels and double-hulled oil tankers. Presently it is building the first range of indigenous aircraft carriers for the Indian Navy, the Vikrant-class aircraft carriers.

Cochin Shipyard was incorporated in 1972 as a Government of India company, with the first phase of facilities coming online in 1982. The company has Miniratna status. The yard has facilities to build vessels up to 1.1 million tons and repair vessels up to 1.25 million tons, the largest such facilities in India. In August 2012, the Government of India announced plans of divestment to raise capital of Rs. 15 billion (15,000 million Rupees) for further expansion through an Initial Public Offering (IPO) towards the end of the fiscal year. However, this did not materialise until August 2017, when the company conducted its IPO and listed its shares on the BSE and NSE.

The government finalised the decision of stake sale on 18 November 2015. 33.9 million (33.9 million) shares of face value Rs. 10 Each will be sold, out of which the government is holding 113,000 shares while the others are fresh equity.

The shipyard also trains graduate engineers in marine engineering. Around one hundred students are trained each year.