A striker apparatus for a vehicle includes a striker adapted to be engaged with a locking member secured at an engaging object and having a pair of base portions, a base member having a pair of attaching holes, a reinforcement member placed on the base member and including a pair of insertion holes opening to face the pair of attaching holes respectively, and a pair of flanges formed at each of base portions being inserted into each of the pair of the attaching holes and each of the insertion holes for holding the base member and the reinforcement member therebetween.