If you currently living in Thailand, please see the links in my article on A Brief Survey of Thai Bible Translations.

If you are living outside of Thailand, try contacting the International Bible Society/Biblica in your country.  Biblica is the publisher of the NIV and they may have available the New Thai Contemporary Version (similar to NIV)

In the USA, you can purchase the Standard version of the Thai Bible from the website of the American Bible Society.

The Thai King James Version (KJV) is available for purchase or download from Philip Pope's website.

In the UK, you can get either a full Bible (version unknown) or a Thai/English New Testament (update of Thai standard version) from the website of the Bible Society.

If you are looking for a modern easy-to-read translation, the World Bible Translation Center in Texas (USA) has an Easy-to-Read New Testament available as a printed book or as a free download.  The International Bible Society also has an NIV-like translation of the Thai Bible available for download on their website.

If you’re interested in an audio Thai Bible, a free MP3 download is available at Faith Comes by Hearing