The pontiff will make a one day trip to the Islam dominated country to appeal for peace.
During his Angelus in St. Peter's Square he told the gathered he wanted "reconciliation, peace, inter-religious dialogue and friendship".
It's the first papal trip to Sarajevo in 18 years and Bosnia-Herzegovina is still recovering from the 1992-95 war.
A year ago there were violent anti-government riots across the country.
It's the latest in a line of trips to Muslim countries in an attempt to gather support to tackle the problem of Christian persecution in the Middle East.