To obtain a resin molded article having both excellent hot water resistance and excellent mechanical strength.

This (meth)acrylic resin composition is characterized by comprising a (meth)acrylic monomer (A), a (meth)acrylic polymer (B), an inorganic filler (C), and at least one methacryloyl group-containing phosphate (D) represented by the general formula (1) [R1 is a group selected from groups represented by the general formula (2); (m) is an integer of 1 to 2], wherein the amount of the methacryloyl group-containing phosphate (D) is 0.1 to 5 pts. mass per 100 pts. mass of the inorganic filler (C).