Pierra Vejjabul

Pierra Vejjabul (, born Pierra Hoon, 27 November 1898 or 1909 – 20 April 1984 She was a pioneer in the field of women's health in Thailand.

Biography Pierra was born in Lampang, Thailand to Trongkij Hoontrakul, a well-to-do merchant, and Phant Hoontrakul, who was his third wife. She was the youngest child of the family. She was educated in Bangkok at Saovabha and Saint Joseph Convent Schools, and graduated from secondary school in 1925. She then took up a teaching position at Assumption Convent and Saint Joseph Convent Schools.

Inspired to study medicine by a French doctor who helped her mother, upon graduation Pierra had applied for training at the Medical School at Siriraj Hospital, but was rejected as the school did not accept females at the time.

She took a position in the Thai Ministry of Public Health's Department of Venereal Diseases. She was a vocal activist on the welfare of prostitutes and their children, an issue ignored by society at large at the time, and dedicated herself to the issue. She founded the Pierra Maternity and Child Welfare Foundation, which under her leadership took over 4,000 abandoned children under its care.

She later adopted the surname Vejjabul, which was granted by Princess Mother Srinagarindra during the premiership of Plaek Pibulsonggram.