A chip on film package includes: a flexible base film having a first surface and a second surface opposite to each other, and having a chip mounting region on the first surface; a plurality of wirings extending in a first direction toward the chip mounting region; a semiconductor chip mounted in the chip mounting region on the first surface of the base film and electrically connected to the wirings; a pair of first heat dissipation members on the first surface of the base film and spaced apart from the semiconductor chip, and extending in a second direction perpendicular to the first direction; and a second heat dissipation member on the first surface of the base film and covering the semiconductor chip and the pair of first heat dissipation members.