Cochin Shipyard Ltd (CSL) is the largest shipbuilding and maintenance facility in India. Cochin shipyard is one of the few companies in the world that have built an aircraft carrier and the only facility in India capable of building such warships. It is part of a line of maritime-related facilities in the port-city of Kochi, in the state of Kerala, India. The shipyard builds platform supply vessels and double-hulled oil tankers. It has built big vessels up to 1,20,000 deadweight tonnage (DWT) capacity, making it the leading shipyard in India in terms of capacity. The company has Miniratna status.

Cochin Shipyard was incorporated in 1972 as a Government of India company, with the first phase of facilities coming online in 1982.

In August 2012, the Government of India announced plans of divestment to raise capital of ₹1,500 crore for further expansion through an initial public offering (IPO) towards the end of the fiscal year. The Government finalised the decision of stake sale on 18 November 2015. 3.39 crore (33.9 million) shares were planned to be sold, out of which the government held 1,13,000 shares while the others were fresh equity. However, this did not materialise until August 2017, when the company conducted its IPO and listed its shares on the BSE and NSE.

The yard has facilities to build vessels up to 1,10,000 deadweight tonnage (DWT) and repair vessels up to 1,25,000 DWT.

The first ship to roll out of the Cochin Shipyard was the MV Rani Padmini in 1981.

The yard has delivered two of India's largest double-hull Aframax tankers, each of 95,000 DWT, including Maharshi Parashuram and Abul Kalam Azad.

CSL has secured shipbuilding orders from internationally renowned companies from Europe and West Asia. The shipyard is building six 30,000 DWT bulk carriers for Clipper Group of the Bahamas and the first three vessels have been launched.

Eight platform supply vessels for the Norwegian Seatankers Management Company, are also under construction.^{[citation needed]}.