Democratic Socialist Republic of Sri Lanka ශ්‍රී ලංකා ප්‍රජාතාන්ත්‍රික සමාජවාදී ජනරජය (Sinhala) இலங்கை சனநாயக சோசலிசக் குடியரசு (Tamil) Sinhala: Śrī Laṅkā Prajātāntrika Samājavādī Janarajaya Tamil: Ilaṅkai Jaṉanāyaka Sōsalisak Kuṭiyarasu
Anthem:
Capital	Sri Jayawardenepura Kotte (legislative) Colombo (executive and judicial) 6°56′N 79°52′E / 6.933°N 79.867°E / 6.933; 79.867
Official languages	Sinhala Tamil
English
Ethnic groups (2012)	74.9% Sinhalese 11.2% Sri Lankan Tamils 9.2% Sri Lankan Moors 4.2% Indian Tamils 0.5% Others (incl. Burghers, Malays, Veddas, Chinese,
Religion (2012)	70.2% Buddhism (official) 12.6% Hinduism 9.7% Islam 7.4% Christianity 0.1% Other/None
Demonym(s)	Sri Lankan
Government	Unitary parliamentary constitutional republic
• President	Ranil Wickremesinghe
• Prime Minister	Dinesh Gunawardena
• Speaker of the Parliament	Mahinda Yapa Abeywardena
• Chief Justice	Jayantha Jayasuriya
Legislature	Parliament
Independence  from the United Kingdom
• Dominion	4 February 1948
• Republic	22 May 1972
• Current constitution	7 September 1978
Area
• Total	Lua error in Module:Convert at line 1850: attempt to index local 'en_value' (a nil value). (120th)
• Water (%)	4.4
Population
• 2019 estimate	21,803,000 (58th)
• 2012 census	20,277,597
• Density	Lua error in Module:Convert at line 1850: attempt to index local 'en_value' (a nil value). (43rd)
GDP (PPP)	2020 estimate
• Total	$321.856 billion (58th)
• Per capita	$14,509 (91st)
GDP (nominal)	2020 estimate
• Total	$92.111 billion (65th)
• Per capita	$4,152 (109th)
Gini (2016)	39.8 medium
HDI (2019)	0.782 high · 72nd
Currency	Sri Lankan rupee (Rs) (LKR)
Time zone	UTC+5:30 (SLST)
Date format	dd-mm-yyyy yyyy-mm-dd
Driving side	left
Calling code	+94
ISO 3166 code	LK
Internet TLD	.lk .ලංකා .இலங்கை
Website www.gov.lk

The Democratic Socialist Republic of Sri Lanka (ශ්‍රී ලංකා in Sinhala, இலங்கை in Tamil) is a tropical island nation off the southeast coast of the Indian subcontinent. The capital of the country is Sri Jayawardenepura Kotte while the largest city is Colombo. Sri Lanka shares a sea boundary with the Maldives in the south-west part and India in the north-west.

It was known as Ceylon before 1972, and Serendib and Sinhale, among other names, before that. It was South Asia's oldest democracy.