Vjekoslav Klaić (21 June 1849 – 1 July 1928) was a Croatian historian and writer, most famous for his monumental work History of the Croats.

Klaić was born in Garčin near Slavonski Brod as the son of a teacher.

[1] After completing his studies, he taught for more than fifty years, first as a high school teacher, and after 1893 as a professor of general history at the University of Zagreb, where he stayed with short breaks until 1922, when he retired.

He wrote short stories and political articles in the Croatian spirit.

In a text about this book, another famous Croatian historian, Ferdo Šišić, pointed out (1914): "Materials, scientific method and details of Klaić's work surpass all the existing works of this kind in our historiography", while Jaroslav Šidak said that "Klaić's book, despite all of its shortcomings, has still not been surpassed regarding the wealth of information in its presentation of the 15th and 16th centuries".