The visit will last till December 15, the Office of the UN High Commissioner for Human Rights said.
Simonovic will meet with several Ukrainian officials and representatives of the civil society. He is also expected to make a trip to eastern Ukraine.
On December 12, Simonovic will take part in presenting the UN Guiding Principles on Business and Human Rights. On December 15, he will hold a news conference to present a report on the eight-months' work of the UN Human Rights Monitoring Mission to Ukraine.