Jaffna (Tamil: Yalpanam, Sinhala: Yāpanaya ) or the City of Jaffna is the capital city of the Northern Province of Sri Lanka. It is the administrative headquarters of the Jaffna district located on a peninsula of the same name. Jaffna is approximately six miles away from Kandarodai which served as a famous emporium in the Jaffna peninsula from classical antiquity. Jaffna's suburb, Nallur served as the capital of the four centuries-long medieval Jaffna kingdom. Prior to the Sri Lankan civil war, it was Sri Lanka's second most populated city after the commercial capital Colombo. Since the 1980s insurgent uprising, military occupation, extensive damage, expulsion and depopulation has happened. Since the end of civil war in 2009, refugees and internally displaced people are returning to their homes and government and private sector reconstruction has begun.

Historically, Jaffna has been a contested city. It was made into a colonial port town during the Portuguese occupation of the Jaffna peninsula in 1619. It changed hands to the Dutch colonials, who lost it to the British in 1796. After Sri Lanka gained independence 1948, the political relationship between the minority Sri Lankan Tamils and majority Sinhalese worsened and after the Black July pogrom, civil war erupted in 1983. Jaffna was occupied by the rebel Liberation Tigers of Tamil Eelam (LTTE) in 1986 and from 1989 until 1995. Indian Peace Keeping Force (IPKF) briefly occupied the city in 1987. The Sri Lankan military gained control in 1995.

Majority of the city’s population are Sri Lankan Tamils, although there was a significant number of Sri Lankan Moors, Indian Tamils and other ethnic groups present in the city prior to the civil war. Most Sri Lankan Tamils are Hindus followed by Christians, Muslims and a small Buddhist minority. The city is home to number of educational institutions established during the colonial and post-colonial period. It also has number of commercial institutions, minor industrial units, banks, hotels and other government institutions such as the hospital. It is home to the popular Jaffna library that was burnt down and rebuilt. The city is anchored by the Jaffna fort rebuilt during the Dutch colonial period.