Khmer OS Project (via Google Fonts or GitHub) or the Ministry of Post and Telecommunications of Cambodia.
If you are looking for more information on Khmer Unicode fonts or AutoCAD, here are some additional resources: download font khmer unicode for autocad
Downloading and installing Khmer Unicode fonts for AutoCAD is a straightforward process that involves getting the right files and placing them where AutoCAD can find them. Because AutoCAD relies on both system-wide TrueType fonts and its own native SHX fonts, you often need a combination for perfect rendering. Where to Download Khmer Unicode Fonts Khmer OS Project (via Google Fonts or GitHub)