Formed in Bangkok in 1959, with Princess Wan Waithayakornas the first President.
PPSEAWA Thailand (PPSEAWAT) hosted the 18th International Conference in Bangkok in 1990. Thailand also hosted the Midterm Council Meeting in Bangkok in 2017.
One member of PPSEAWA served as the International President, Sumalee Chartikavanij, 1988-94.
PPSEAWAT has the distinction of being granted special consultative status to the United Nations in 2000.