Jaffna (Tamil: யாழ்ப்பாணம் Yalpanam, Sinhala: යාපනය 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.