You already know the names of some of the provinces.  They are included in the following list of all sixteen.

NNorthern Laos, rkdgVnv
c0;'zqh'lk]u	khwE%EG pho#G sa%a li#i	Phong Salii Province
c0;'s^;'rt[k'	khwE%EG lu%aG pha baaG	Luang Prabang Province
c0;'s^;'oehmk	khwE%EG lu#aG na#m tha&a	Luang Nam Tha Province
c0;'[+cdh;	khwE%EG bO&O kE#Ew	Bo Keaw Province
c0;'v5fq,w-	khwE%EG u do&m sa#i	Udomchai Province
c0;'-P'0;k'	khwE%EG si#aG khu%aG	Xieng Khouang Province
c0;'sq;rao	khwE%EG hu%a pha#n	Houa Phan Province
c0;'w-pt[6]u	khwE%EG sa#y Na buu li#i	Sayyaboury Province
Central Laos, rkddk'
g0fdecr'ot7vo;P'9ao	khe#t kam phEEG nakhon wi#agcan	The City of Vientiane
c0;';P'9ao	khwE%EG wi#aG can	Vientiane Province
c0;'7e,j;o	khwE%EG kha#m mu&an	Kham Mounane Province
c0;'[=]y7ew-	khwE%EG bO&O li#i kha#m sa#y	Borikhamxay Province
c0;'lts;aootg0f	khwE%EG sawa%nnakhe^et	Savannakhet Province
Southern Laos, rkdw8h
c0;'lk]t;ao	khwE%EG sa%a la wa#n	Salavan Province
c0;'g-dv'	khwE%EG se#e kOOG	Xaykong Province
c0;'9exklad	khwE%EG campaasa#k	Champasack Province
c0;'vaf8txn	khwE%EG a#ttapyy	Attapeu Province