Yangon Region (, ; formerly
Rangoon Division and
Yangon Division) is an administrative region of
Myanmar. Located in the heart of
Lower Myanmar, the division is bordered by
Bago Region to the north and east, the
Gulf of Martaban to the south, and
Ayeyarwady Region to the west. Yangon Region is dominated by its capital city of
Yangon, the former national capital and the largest city in the country. Other important cities are
Thanlyin and
Twante. The division is the most developed region of the country and the main international gateway. The division measures .