Ernakulam is the central business district of the city of Kochi, Kerala, India. It is the namesake of Ernakulam district. The eastern part of Kochi city is mainly known as Ernakulam, while the western part of it after the Venduruthy Bridge is called as Western Kochi. Many major establishments, including the Kerala High Court, the office of the Kochi Municipal Corporation and the Cochin Shipyard are situated in Ernakulam. It is also the most urbanized area in the city of Kochi.

Kochi, also known by its former name Cochin, is a major port city along the Malabar Coast of India bordering the Laccadive Sea. It is part of the district of Ernakulam in the state of Kerala. The city is also commonly referred to as Ernakulam. As of 2011, the Kochi Municipal Corporation had a population of 677,381 over an area of 94.88 km2, and the larger Kochi urban agglomeration had over 2.1 million inhabitants within an area of 440 km2, making it the largest and the most populous metropolitan area in Kerala. Kochi city is also part of the Greater Cochin development region and is classified as a Tier-II city by the Government of India. The civic body that governs the city is the Kochi Municipal Corporation, which was constituted in the year 1967, and the statutory bodies that oversee its development are the Greater Cochin Development Authority (GCDA) and the Goshree Islands Development Authority (GIDA).