ISO 8859-11 is an 8-bit character encoding, part of the ISO 8859 standard. It covers the characters used for the Thai language. It was added in 1999 to the ISO 8859 standard, and is nearly identical to the national Thai standard TIS-620 (1990), the sole difference being that ISO 8859-1 defines hex A0 as a non-breaking space, while TIS-620 leaves it undefined. (In practice, this small distinction is usually ignored.)

The Microsoft Windows codepage 874 as well as the codepage used in the Thai version of the Apple Macintosh are an extension of TIS-620, however incompatible with each other.

As with all varieties of ISO 8859, the lower 7 bits are equivalent to ASCII. The additional characters are found in Unicode with the same outline, only shifted from A1 to 0E01 and so forth.

You may need to set your text size to about 200% to see all the characters

In the table above, 20 is the regular SPACE character, and A0 is the NO-BREAK SPACE.

• Code values 00-1F, 7F, 80-9F, DB-DE and FC-FF are not assigned to characters by ISO/IEC 8859-11.
• Code values D1, D4-DA, E7-EE are combining characters .

External links

• Final draft of the ISO 8859-11
• Windows codepage 874
• MacThai codepage
• Standardization and Implementations of Thai Language PDF 175k