It is understood that he will meet Deputy King Shaikh Salman bin Hamad Al Khalifa and other senior officials.
Blair was appointed as envoy of the Quartet, the European Union, Russia, the United Nations and the US after resigning from the House of Commons last month.
He has taken up the job after 10 years as British prime minister, where he was praised for helping to end three decades of sectarian violence in Northern Ireland as well as paving the way for power-sharing between Protestants and Catholics.
