A fire in a girls' dormitory in Kenya on Thursday killed 16 children and hospitalised 79 in the latest deadly blaze to hit a school in the east African country.

The fire broke out shortly before 1:00 am local time at Utumishi Girls Academy in Nakuru County, around 120 kilometres (75 miles) north of the capital Nairobi, officials said.

There have been many devastating school fires in Kenya, where boarding schools are common as a colonial legacy of missionaries and the British.

"We have 16 fatalities. It's an unfortunate incident," education minister Julius Migos Ogamba told reporters at the scene, without giving ages for the victims.

The affected dormitory had shattered windows, blackened walls and a crumpled corrugated iron roof, an AFP journalist saw.