The Asia Pacific Summit 2019 – Cambodia was convened in Phnom Penh, the capital of Cambodia, from November 18 to 21, 2019 with over 500 international guests from 46 nations, in attendance. Among the dignitaries who attended the event were two current vice presidents (Myanmar and Palau), a current speaker and deputy speaker (Bangladesh and Pakistan), a Nobel Laureate, and nine former heads of state and government (Afghanistan, Colombia, Indonesia, Iran, Nepal, Pakistan, Solomon Islands, and two from Timor-Leste). From Cambodia, in attendance were deputy prime ministers, ministers, governors, mayors, and chief provincial council members, among others. In addition, all diplomatic missions in Phnom Penh were invited and most joined the summit.
At the personal invitation of Cambodian Prime Minister H.E. Hun Sen, the summit on November 19 was held inside the Peace Palace, the office of the prime minister. It was attended by 800 delegates. Just prior to the opening of the summit, H.E. Sen received Dr. Hak Ja Han Moon, co-founder of UPF, as the head of the international delegation from 46 nations. She had been personally invited to Cambodia by the prime minister.