The Western Province of Kenya (Kiswahili: Mkoa wa Magharibi) was one of 8 Provinces of Kenya before the 2010 constitution did away with provinces and organised the country into 47 counties. Its neighbours were Rift Valley to the north, Tanzania to the south Rift Valley the east and Rift Valley south. The provincial headquarters was Kakamega Town.
There were 4 legally created districts in this province. These were Kakamega, Vihiga, Bungoma, and Busia.
After the 2010 constitution, the county boundaries and names followed those of the districts. The province was headed by a provincial commissioner. It is now moribund, but under the office of the president, the region previously known as Western province is now known as Western region and is under a Regional Commissioner appointed by the president.