An Interior Ministry statement says security forces foiled several such attacks.
In the last major attempt, suicide bombers tried but failed to attack an oil facility at the Abqaiq oil complex in eastern Saudi Arabia in February 2006. The complex is the world's largest oil processing facility.
Wednesday's ministry statement did not say when the arrests were made. It said the suspects are 47 Saudis, 51 Yemenis, a Somali, an Eritrean and a Bengali.