The minority languages of Laos are also written in the Lao script, and officially it is the only script to write them in Laos, but many speakers of Hmong prefer the Latin alphabet.
The Lao script is very similar to the Thai alphabet, but Lao's spelling system is simpler and more phonetic, partially due to a spelling reform carried out in the 1960s.
The table below shows the Lao consonant letters with their phonetic value in the IPA, and transcriptions according to the US Board on Geographic Names and the British Permanent Committee on Geographical Names (BGN/PCGN), the US Library of Congress (ALA/LC) and the transcriptions used in the Unicode names of the letters.
| Character | IPA | BGN/PCGN | ALA/LC | Unicode |
|---|---|---|---|---|
| ກ | k | k | k/k | k |
| ຂ | kʰ | kh | kh/k | kh |
| ຄ | kʰ | kh | kh/k | kh |
| ງ | ŋ | ng | ng/ng | ng |
| ຈ | ʧ | ch | ch/t | c |
| ສ | s | s | s/t | s |
| ຊ | s | x | s/t | s |
| ຍ | ɲ | gn/y | ny/— | ny |
| ດ | d | d/t | d/t | d |
| ຕ | t | t | t/t | t |
| ຖ | tʰ | th | th/t | th |
| ທ | tʰ | th | th/t | th |
| ນ | n | n | n/n | n |
| ບ | b | b/p | b/p | b |
| ປ | p | p | p/p | p |
| ຜ | pʰ | ph | ph/p | ph |
| ຝ | f | f | f/p | f |
| ພ | pʰ | ph | ph/p | ph |
| ຟ | f | f | f/p | f |
| ມ | m | m | m/m | m |
| ຢ | j | y | y | y |
| ຣ | r | r | r | r |
| ລ | l | l | l | l |
| ວ | w | v/o | v | w |
| ຫ | h | h | h | h |
| ອ | — | — | o | |
| ຮ | h | h | h | h |
The table below shows the Lao vowel nuclei, combined with the consonant ກ. (provisional version)
| IPA | BGN | LC | Unicode | IPA | BGN | LC | Unicode | IPA | BGN | LC | Unicode | IPA | BGN | LC | Unicode | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ກະ/ກັກ | a | a | a | a | ກາ | aː | a | ā | aa | ||||||||||
| ກິ | i | i | i | i | ກີ | iː | i | ī | ii | ເກັຍະ/ເກັຽະ*/ກັຽກ | iə | ia | ia | ເກັຍ/ເກັຽ*/ກຽກ | ia | īa | |||
| ກຶ | ɯ | u | ư | y | ກື | ɯː | u | ư̄ | yy | ເກຶອະ/ເກຶອກ | ɯə | ua | ưa | ເກືອ | ua | ư̄a | |||
| ກຸ | u | ou | u | u | ກູ | uː | ou | ū | uu | ກົວະ/ກັວກ | uə | oua | ua | ກົວ/ ກວກ | oua | ūa | |||
| ເກະ/ເກັກ | e | é | e | ເກ | eː | é | ē | e | |||||||||||
| ແກະ/ແກັກ | ɛ | è | æ | ແກ | ɛː | è | ǣ | ei | |||||||||||
| ໂກະ/ກົກ | o | ô | o | ໂກ | oː | ô | ō | o | |||||||||||
| ເກາະ/ກັອກ | ɔ | o | ǫ | ກໍ/ກອກ | ɔː | o | ǭ | ||||||||||||
| ເກິະ/ເກິກ | ɤ | eu | œ | ເກີ/ ເກີກ | ɤː | eu | œ̄ | ||||||||||||
| ໄກ/ໃກ/ກັຍ* | ai | ai | ai | ai/ay | ກາຍ/ກາຽ* | ai | āi | ||||||||||||
| ເກົາ | au | ao | ao | ||||||||||||||||
| ກໍາ | am | am | am | am |
* indicates variations no longer used in the reformed spelling
The Unicode range for Lao is U+0E80–U+0EFF. Grey areas indicate non-assigned code points.