|Ban of Croatia-Slavonia|
1 July 1903 – 26 June 1907
|Preceded by||Károly Khuen-Héderváry|
|Succeeded by||Aleksandar Rakodczay|
|Minister of Croatian Affairs of Hungary|
21 July 1913 – 16 January 1916
|Preceded by||István Tisza|
|Succeeded by||István Tisza|
|Born||24 September 1855|
Našice, Kingdom of Slavonia, Austrian Empire
|Died||22 July 1928 (aged 72)|
|Political party||Unionist Party|
|Spouse(s)||Elizabeta Vay de Vaya|
At the beginning of the 20th century, he was faced with a new direction of Croatian policy marked by political alliance between Croats and Serbs in Austria-Hungary for mutual benefit. A Croat-Serb Coalition was formed in 1905 and it governed the Croatian lands from 1906 until the dissolution of the Dual Monarchy in 1918. As Pejačević supported the ruling Coalition in its resistance towards the Hungarian quest in 1907 to introduce the Hungarian language to be the official language on railways in Croatia, he was forced to resign.
He also took part as the Minister for Croatia, Slavonia and Dalmatia in the Hungarian Government from 1913 to 1916. However, during World War I he was interned in France on 22 August 1914. After that he was substituted by the Prime Minister István Tisza.