Coastal Andhra, also known as Kosta Andhra (IAST: Kōstā Āndhra), is a geographic region in the Indian state of Andhra Pradesh, comprising the coastal districts of the state between the Eastern Ghats and the Bay of Bengal, from the northern border with Orissa to Rayalaseema in the south. It includes major cities Visakhapatnam, Vijayawada and Guntur City as well as the state capital Amaravati and is recognized for its fertile lands, rich cultural heritage, and economic importance. Coastal Andhra plays a significant role in the state's agricultural output, particularly in rice and tobacco production, supported by abundant water resources from the Godavari, Krishna, and Penna rivers.
While Coastal Andhra generally includes the districts along the Bay of Bengal, the Uttarandhra (Northern Andhra) area is sometimes regarded as distinct due to its unique cultural and historical background. Coastal Andhra shares borders with the Rayalaseema region of Andhra Pradesh and the state of Telangana. Covering an area of 91,915 square kilometres (35,489 sq mi), Coastal Andhra accounts for 58% of Andhra Pradesh's total area and, as per the 2011 Census of India, hosts a population of over 3.4 crore, constituting 69.20% of the state's population. Coastal Andhra was formerly part of the Madras State until 1953 and then became part of Andhra State from 1953 to 1956.