Thailand

A person shall enjoy the right to property and succession.
The extent and restriction of such right shall be as provided by law. … (Sec. 37)

The State should take actions relating to land, water resources and energy as follows:
...
3. to provide measures for distribution of landholding in order to thoroughly and fairly allow people to have land for making a living;
4. to provide quality water resources which are sufficient for consumption by the people, including for agriculture, industry and other activities;
... (Sec. 72)

The State should provide measures or mechanisms to enable farmers to efficiently carry out agriculture which yields produce of high quantity and quality that is safe, low cost and competitive in the market, and should assist indigent farmers to have land for making a living through land reform or any other means. (Sec. 73)

National reform in various areas shall be carried out to at least achieve the following results:
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g. Other Areas:
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2. ensuring a fair distribution of land holding, as well as an examination of ownership and holding of land throughout the country with a view to systemically solving the problems of land ownership and possessory rights;
... (Sec. 258)