Pimsiri Petchnamrob

Pimsiri "Mook" Petchnamrob is a Thai human rights activist. She is known for her work promoting the right to freedom of speech in Thailand, for which she has experienced harassment from Thai authorities.

Biography Petchnamrob was born and raised in Bangkok. She serves as the Thailand programme officer for Article 19, a British human rights organisation that works to defend and promote freedom of speech and freedom of information around the world. In addition, as of 2025, Petchnamrob is the director of the board of Amnesty International Thailand, the Thai section of the international non-governmental organisation Amnesty International, which focuses on the promotion and protection of human rights.

In November 2021, Petchnamrob was charged under section 112 of the Criminal Code of Thailand, known as the lèse-majesté which makes it illegal to defame, insult or threaten the King of Thailand or the Thai royal family. This was in relation to a speech she had given in November 2020 at a demonstration in front of the 11th Infantry Regiment, the Thai King's Guard, in Bangkok, in which she cited a 2017 statement by the United Nations Special Rapporteur on the promotion and protection of the right to freedom of opinion and expression, in which lèse-majesté was criticised as being incompatible with democratic values. Authorities stated that the speech had defamed Vajiralongkorn, the King of Thailand. Petchnamrob was granted temporary bail on the basis that she refrained from criticising the monarchy and that she agreed not to travel abroad without the court's permission.

In 2023 and 2024, Petchnamrob was prevented from travelling abroad, including from attending a session of the United Nations Human Rights Council in Geneva; clear justifications for the refusals were not given.