Until recently, it was believed that people settled in the area of today's Bosnia and Herzegovina only a few thousand years ago, that is, in the epoch of the Neolithic period 5-6 thousand years ago. Intensive archeological excavations revealed traces of men who lived in Bosnia and Herzegovina in the Early Stone Age, or more precisely, in the Middle Paleolithic. In the territory of Bosnia and Herzegovina, the material legacy of the Paleolithic is marked by the oldest monument of Paleolithic art in Southeast Europe - an engraving in the rock of the cave Badanj near Stolac, called Horse attacked by arrows, preserved fragmentarily, and was made around 12,000 BC. Genetic research revealed that the first people in Bosnia and Herzegovina were present even 20,000 years ago. A total of 2,501 people were tested in Bosnia and Herzegovina, they were classified into eight haplogroups: I, R, J, E, G, N, T and Q. The most common haplogroup in Bosnia and Herzegovina is haplogroup I. 52% of tested people belong to this haplogroup (I1- 8% i I2 - 44%). The second most common is haplogroup R with 21% (R1a-5% and R1b-16%), followed by haplogroups E-13%, J-9% (J1-1% and J2-8%), N-3%, G-2% and haplogroups T (3 tested, 0%) and Q (1 tested, 0%). Four haplogroups: I, R, E and J are represented in Bosnia and Herzegovina with 94%. The movement path of haplogroup I2-M423 begins 230,000 years ago from Africa and goes from Nigeria through Chad, Sudan, Ethiopia, Yemen, Oman, Iran, Iraq, Syria, Turkey, all the way to the Balkan Peninsula. The path ends in the territory of Bosnia and Herzegovina about 18,000 years ago. Censuses in Bosnia and Herzegovina are also presented in this work. The oldest population census of Bosnia and Herzegovina dates back to the very beginning of the seventeenth century, and was conducted during the Turkish rule in the Balkan countries, including Bosnia and Herzegovina. The first population census in Bosnia and Herzegovina by the Austro-Hungarian authorities was carried out in 1879. Censuses were made in 1885, 1895 and 1910. In the period 1921-2013 a total of nine censuses were carried out in B&H.