Peter Kresimir IV, called the Great (died 1075) is a notably energetic King of Croatia from 1059 to his death in 1074/1075.

He is the last great ruler of the Krešimirović branch of the House of Trpimirović.

Under his rule, the Croatian realm reaches its peak territorially, earning him the sobriquet "the Great," otherwise unique in Croatian history.

He keepshis seat at Nin and Biograd na Moru, however, the city of Šibenik holds a statue of him and is sometimes called Krešimir's city ("Krešimirov grad", in Croatian) because he is generally credited as the founder.