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 identical to the national Thai standard TIS-620, which dates back to 1990.

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.

ISO/IEC 8859-11
x0x1x2x3x4x5x6x7x8x9xAxBxCxDxExF
0xunused
1x
2xSPexclamation markdouble quote#dollar sign%&'()*+comma -full stop/
3x 0 123456789colon semicolon<=>question mark
4x@ABCDEFGHIJKLMNO
5xPQRSTUVWXYZ[\\]^_
6x`abcdefghijklmno
7xpqrstuvwxyz{|}~
8xunused
9x
AxNBSP
Bx
Cx
Dx฿
Ex
Fx

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

Code values 00-1F, 7F, and 80-9F are not assigned to characters by ISO/IEC 8859-11.

External links