Recent advances in electron quantum optics show the breathtaking progress in utilizing the electron's wave nature. Inspired by these advances, we propose a new type of electron quantum interference logic device (eQILD), where an electron wave is coherently injected into a two-dimensional (2D) wave guide and controlled via two gates. Interference effects lead to different current levels in output channels and are utilized for classical logic gates. The operating principle is shown by means of dynamic quantum Wigner and classical simulations considering coherent/ballistic transport. Contrary to other advanced information processing approaches no magnetism nor bosonic systems are required. The eQILD is inherently compatible with conventional integrated circuits and thus provides an attractive alternative towards advanced low-power information processing devices with the performance only limited by the single-electron source frequency being in the GHz regime.