Glass-fiber-reinforced polymer (GFRP) composites are significantly utilized in the automobile, marine, aeronautics, sporting goods, and building materials sectors, replacing several traditional materials. The application of these composites requires special attention given to their research and development in the field of manufacturing and machining. This study involves changing the drill bit diameter, feed rate, and spindle speed to drill GFRP composites. The drilling process is carried out using Taguchi’s L27 orthogonal array. To optimize drilling performance, a multicriteria response technique, like the multiobjective optimization by ratio analysis (MOORA) method, is utilized for the optimization of multiple objectives, such as delamination at the exit, surface roughness, thrust force, and torque. To minimize these values, the optimum parametric setting is found to be spindle speed = 350 rev/min, feed rate = 0.050 mm/rev, and drill bit diameter = 10 mm.