Darius Ou is a Singaporean graphic designer whose practice focuses on typography, motion, and lores. He runs an eponymous studio working internationally on identity design and experimental typographic projects. Alongside his commercial practice, Ou runs hyperpress, a research initiative exploring graphic design through 3D printing.

The studio's works have been recognised by Brno Biennial of Graphic Design, British D&AD, STA Chicago, TDC Tokyo, TDC New York, ADC Switzerland, and ADC New York — a recipient of Young Guns 21. Ou's works are held in the permanent collections of Harvard University Houghton Library, University of the Arts London (CCA) Library, Singapore Art Museum, The Museum of Avant-garde, Moravská galerie v Brně, and the Victoria & Albert Museum.