Ernakulam is one of the 14 districts in the Indian state of Kerala, and takes its name from the eponymous city division in Kochi. It is situated in the central part of the state, spans an area of about 2,924 square kilometres (1,129 sq mi), and is home to over 9% of Kerala's population. Its headquarters are located at Kakkanad. The district includes Kochi, also known as the commercial capital of Kerala, which is famous for its ancient churches, Hindu temples, synagogues and mosques.

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.