Angelina Jolie is visiting Libya, the UN refugee agency said.
A spokesman for the UN High Commissioner for Refugees, Adrian Edwards, said that the US actress, who is a goodwill ambassador, was visiting on a personal capacity.
She plans to meet aid groups and UNHCR representatives in the country.
The Geneva-based agency said last week that it was discussing a bigger role for Angelina after receiving five million dollars (£3.2m) in donations from her over the past decade.
The actress has visited dozens of countries to promote the cause of refugees during her 10 years as goodwill ambassador for UNHCR.
Thousands of Libyans fled their homes during the uprising against Muammar Gaddafi, though many have returned since the strongman's downfall.