king of Pamplona (Navarre) from 1134 to 1150, grandson of Sancho IV and son of El Cid's daughter Cristina and Ramiro Sánchez, lord of Monzón.

When Alfonso I of Aragon and Navarre died in 1134 and the Aragonese proclaimed the succession for his brother Ramiro II, the Navarrese rebelled and restored their own ancient line in the person of García Ramirez. García IV broke the union of Aragon and Navarre by declaring himself a vassal of Alfonso VII of Castile, “emperor” of Spain, but a year later he broke with Castile and allied himself with the Portuguese against Castile and Aragon. After Ramiro's abdication (1137), there ensued a period of warfare and intrigue among the kingdoms of Spain, ending in 1149. In spite of these wars García IV collaborated with Alfonso VII against the Muslim Almohads and took part in the conquest of Almeria (1147). On his death, he was succeeded by his son Sancho VI.