ISO 3166-2:LA is an ISO standard which defines geocodes: it is the subset of ISO 3166-2 which applies to Laos.
Each two-part code consists of the ISO 3166-1 code for Laos (LA) and a 2-character-alphabetic sub-code, hyphenated together.
LA-AT
LA-BK
LA-BL
LA-CH
LA-HO
LA-KH
LA-LM
LA-LP
LA-OU
LA-PH
LA-SL
LA-SV
LA-VI
LA-VT
LA-XA
LA-XE
LA-XI
LA-XN