← 2018 2017 2016 2019 in Tonga → 2020 2021 2022
Decades:	1990s 2000s 2010s 2020s
See also:	Other events of 2019 Timeline of Tongan history

Events in the year 2019 in Tonga.

• Monarch: Tupou VI
• Prime Minister: ʻAkilisi Pōhiva (until 12 September), Semisi Sika (acting, from 12 September until 8 October), Pohiva Tuʻiʻonetoa (from 8 October)

• Metis Shoal, a volcanic island at the top of a submarine volcano between Kao and Late disappears during an eruption which is first reported on the morning of 14 October. A new and bigger island appears nearby.

• 12 September – ʻAkilisi Pōhiva, Prime Minister (b. 1941).^[1]