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印度尼西亚共和国（以下简称印尼），面积1913578.68平方公里。人口2.62亿，世界第四人口大国。有数百个民族，其中爪哇族人口占45%，巽他族14%，马都拉族7.5%，马来族7.5%，其他26%。民族语言共有200多种，官方语言为印尼语。约87%的人口信奉伊斯兰教，是世界上穆斯林人口最多的国家。6.1%的人口信奉基督教，3.6%信奉天主教，其余信奉印度教、佛教和原始拜物教等。
首都雅加达，常住人口1037.4万。
印尼全国共有一级行政区（省级）34个，包括雅加达首都、日惹、亚齐3个地方特区和31个省。二级行政区（县/市级）共514个。
印尼主要由沿海低地组成，多数较大岛屿多山，其陆地有一半是森林。印尼位于环太平洋火山带，面临很多自然威胁，如地震、海啸、火山爆发、洪水和干旱等。
印尼航空航天技术较强，其石油、天然气和锡的储量在世界上占有重要地位。石油和天然气是印尼最大的出口行业，每年出口额约500亿美元，旅游业也是该国的重点行业，此外印尼还大量出口木材、可可、咖啡、锡、铜和镍、纺织品、电子产品、机械和设备等。
印尼是东南亚最大的经济体。2019年，印尼国内生产总值约1.11万亿美元，人均国内生产总值约4237美元，国内生产总值增长率5.02%。
Republic of Indonesia (hereinafter referred to as Indonesia), with an area of 1913578.68 square kilometers and a population of 262 million, it is the fourth most populous country in the world. There are hundreds of ethnic groups, of which Java accounts for 45%, Sunda 14%, Madura 7.5%, Malay 7.5% and others 26%. There are more than 200 ethnic languages, and the official language is Indonesian. About 87% of the population believe in Islam, which is the country with the largest Muslim population in the world 。 6.1% of the population believe in Christianity, 3.6% believe in Catholicism, and the rest believe in Hinduism, Buddhism and primitive fetishism.
Jakarta, the capital, has a permanent resident population of 10.374 million.
There are 34 first-class administrative regions (provinces) in Indonesia, including the capital of Jakarta, Yogyakarta and Aceh, and 31 provinces. There are 514 second-class administrative regions (county / municipal).
Indonesia is mainly composed of coastal lowlands, most of which are large islands and mountainous, and half of its land is forest. Indonesia is located in the Pacific Rim volcanic belt and faces many natural threats, such as earthquake, tsunami, volcanic eruption, flood and drought.
Indonesia has strong aerospace technology, and its reserves of oil, natural gas and tin occupy an important position in the world. Oil and natural gas are Indonesia's largest export industries, with an annual export volume of about US $50 billion. Tourism is also the country's key industry. In addition, Indonesia also exports a large number of timber, cocoa, coffee, tin, copper and nickel, textiles, electronic products, machinery and equipment.
Indonesia is the largest economy in Southeast Asia. In 2019, Indonesia's GDP is about US $1.11 trillion, the per capita GDP is about US $4237, and the GDP growth rate is 5.02%.