human rights defender
Thun Ratha
Actions and Campaigns
human rights defender
Actions and Campaigns
Legal assistance, psychosocial assistance, and humanitarian support.
1992
Man
Rural
In prison (sentenced)
Thun Ratha is a prominent Cambodian environmental activist born in 1992 in Boeng Leu Village, Kandal Province. He initially pursued studies in International Relations at Khemarak University while working various jobs to support himself. His passion for environmental protection led him to join the Mother Nature movement in 2015, where he became actively involved in campaigns against sand dredging and other environmental issues.
Ratha’s activism has resulted in multiple arrests and legal challenges. In 2024, he was sentenced to six years in prison on charges of “plotting” related to his environmental advocacy
Jul 2, 2024
6 years imprisonment
Latitude: 11.91824418705804
Longitude: 105.6180325123829
Tboung Kmum
Correctional Center 3 in Tboung Kmum province
Five environmental defenders from Mother Nature Cambodia—Long Kunthea, Yim Leanghy, Thun Ratha, Phuon Keoraksmey, and Ly Chandaravuth—have spent nearly a year and a half in prison awaiting their appeal hearing. Since their July 2024 conviction by the Phnom Penh Municipal Court, they have remained imprisoned and isolated, separated not only from their families but also from one another. On 2 July 2024, the five activists were convicted of "plotting," with Yim Leanghy facing an additional conviction for "lèse-majesté." They were sentenced to terms ranging from six to eight years; five other members were convicted in absentia on the same day. The Phnom Penh Appeal Court originally scheduled their hearing for 26 June 2025. However, just days before the date, the trial was postponed, reportedly due to administrative issues regarding court summons for those convicted in absentia. Throughout this period, the five bail requests have been repeatedly rejected: bail requests were denied by the Appeal Court on 17 February and 1 December 2025, and by the Supreme Court on 30 April 2025, and 2 March 2026. By the end of March 2026, no date of his appeal trial has been set.
Cambodia: Conviction of youth activists a further blow to Cambodia’s environmental movement
Potential violations of the right to a fair trial for five Mother Nature Cambodia activists https://cchrcambodia.org/en/publications/briefing-note/potential-violations-of-the-right-to-a-fair-trial-for-five-mother-nature-cambodia-activists
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Thun Ratha is a prominent Cambodian environmental activist born in 1992 in Boeng Leu Village, Kandal Province. He initially pursued studies in International Relations at Khemarak University while working various jobs to support himself. His passion for environmental protection led him to join the Mother Nature movement in 2015, where he became actively involved in campaigns against sand dredging and other environmental issues.
Ratha’s activism has resulted in multiple arrests and legal challenges. In 2024, he was sentenced to six years in prison on charges of “plotting” related to his environmental advocacy
Latitude: 11.91824418705804
Longitude: 105.6180325123829
6 years imprisonment
Five environmental defenders from Mother Nature Cambodia—Long Kunthea, Yim Leanghy, Thun Ratha, Phuon Keoraksmey, and Ly Chandaravuth—have spent nearly a year and a half in prison awaiting their appeal hearing. Since their July 2024 conviction by the Phnom Penh Municipal Court, they have remained imprisoned and isolated, separated not only from their families but also from one another. On 2 July 2024, the five activists were convicted of "plotting," with Yim Leanghy facing an additional conviction for "lèse-majesté." They were sentenced to terms ranging from six to eight years; five other members were convicted in absentia on the same day. The Phnom Penh Appeal Court originally scheduled their hearing for 26 June 2025. However, just days before the date, the trial was postponed, reportedly due to administrative issues regarding court summons for those convicted in absentia. Throughout this period, the five bail requests have been repeatedly rejected: bail requests were denied by the Appeal Court on 17 February and 1 December 2025, and by the Supreme Court on 30 April 2025, and 2 March 2026. By the end of March 2026, no date of his appeal trial has been set.
Legal assistance, psychosocial assistance, and humanitarian support.
Cambodia: Conviction of youth activists a further blow to Cambodia’s environmental movement
Potential violations of the right to a fair trial for five Mother Nature Cambodia activists https://cchrcambodia.org/en/publications/briefing-note/potential-violations-of-the-right-to-a-fair-trial-for-five-mother-nature-cambodia-activists