Ivan Kukuljević Sakcinski (29 May 1816 – 1 August 1889) was a Croatian historian, politician and writer, most famous for the first speech delivered in Croatian before the Parliament. Considered a renowned patriot, Kukuljević was a proponent of Illyrian movement and avid collector of historical documents, primarily those for his work in Croatian historiography and bibliography.
Kukuljević was born in Varaždin. He completed his secondary education in gymnasiums in his hometown and in Zagreb. He went to the Military Academy of Krems. As a student, Kukuljević started writing in German. In 1833, he joined the army and became an officer in Vienna three years later. He met Ljudevit Gaj and joined the Illyrian movement in 1837. He was ordered to move to Milan in 1840. In 1842, he resigned from his military duties and returned to Croatia, joining the political fight against Magyarization and censorship. He became one of the leaders of the Illyrian movement.
Kukuljević was a member of the People's Party, and was one of its leading members as early as 1843.
The political activity of Kukuljević can be separated into two periods: until 1850 and from 1860 to 1867. The gap from 1851 to 1860 was caused by the absolutism instituted by Minister Bach, which repressed political life in Croatia. In the first period, he was a partisan of the liberation of Croatia from Austria and Hungary, an uncompromising ideologue promoting revolutionary actions to achieve the unity of the South Slavs. Believing that the South Slavs can be delivered and unified only by force of arms, he lobbied among the Croats and Serbs at the Military Frontier. Swayed by his personality, the frontiersmen asked for the freedom and unity of the South Slav peoples in their People's Requests of spring 1848, referring to him as their inspiration.