The Serbian president will meet his host, President Mesic, Prime Minister Ivo Sanader and representatives of the Serb minority in Croatia, Mesic's office said in a statement on Monday.
Tadic is also expected to visit the southern town of Knin and meet the town mayor and members of the local government, local Serbs and dignitaries of the Serb Orthodox Church.
The Serbian president will also meet leading officials of a number of Croatian companies which have a successful cooperation with Serbia.
This is Tadic's first visit to Croatia after the dissolution of the state union of Serbia and Montenegro.
Tadic is visiting Montenegro today, on Wednesday he will travel to Macedonia and on Thursday he will wrap up his tour of the region by visiting Sarajevo.