The Konbaung dynasty (Burmese: ကုန်းဘောင်မင်းဆက်), also known as the Third Burmese Empire (တတိယမြန်မာနိုင်ငံတော်), was the last dynasty that ruled Burma from 1752 to 1885. It created the second-largest empire in Burmese history and continued the administrative reforms begun by the Toungoo dynasty, laying the foundations of the modern state of Burma. The reforms, however, proved insufficient to stem the advance of the British Empire, who defeated the Burmese in all three Anglo-Burmese Wars over a six-decade span (1824–1885) and ended the millennium-old Burmese monarchy in 1885.

Pretenders to the dynasty claim descent from Myat Phaya Lat, one of Thibaw's daughters.

An expansionist dynasty, the Konbaung kings waged campaigns against the Lushai Hills, Manipur, Assam, Arakan, the Mon kingdom of Pegu, Siam, and the Qing dynasty of China—thus establishing the Third Burmese Empire. Subject to later wars and treaties with the British, the modern state of Myanmar can trace its current borders to these events.

Throughout the Konbaung dynasty, the capital was relocated several times for religious, political, and strategic reasons.

The dynasty was founded by a village chief, who later became known as Alaungpaya, in 1752 to challenge the Restored Hanthawaddy Kingdom which had just toppled the Taungoo dynasty. By 1759, Alaungpaya's forces had reunited all of Burma (and Manipur) and driven out the French and the British who had provided arms to Hanthawaddy.

Alaungpaya's second son, Hsinbyushin, came to the throne after a short reign by his elder brother, Naungdawgyi (1760–1763). He continued his father's expansionist policy and finally took Ayutthaya in 1767, after seven years of fighting.

In 1760, Burma began a series of wars with Siam that would last well into the middle of the 19th century. By 1770, Alaungpaya's heirs had destroyed Ayutthaya (1765–1767), subdued much of Luang Phrabang and Vientiane (both 1765) and defeated four invasions by Qing China (1765–1769). With the Burmese preoccupied for another two decades by another impending invasion by the Chinese, Siam reunified by 1771, and went on to capture Lan Na by 1776. The Burmese made additional invasions to the newly reconstituted Siam in 1785 and 1786 but failed. Burma and Siam went to war until 1855 but after decades of war, the two countries exchanged Tenasserim (to Burma) and Lan Na (to Siam).

In the defence of its realm, the dynasty fought four wars successfully against the Qing dynasty of China which saw the threat of the expansion of Burmese power in the East. In 1770, despite his victory over the Chinese armies, King Hsinbyushin sued for peace with China and concluded a treaty to maintain bilateral trade with the Middle Kingdom which was very important for the dynasty at that time. The Qing dynasty then opened up its markets and restored trading with Burma in 1788 after reconciliation. Thenceforth peaceful and friendly relations prevailed between China and Burma for a long time.