EWA TREBACZ (b. November 11, 1973, Krakow, Poland) is a Polish composer and media artist, living in the United States (Seattle). From 2001 to 2003 she studied computer music at the University of Washington with Richard Karpen and Juan Pampin, and experimental video with Shawn Brixey. In 2004 she became a doctoral student in the first PhD program in new media in the United States: the Center for Digital Arts and Experimental Media (DXARTS), University of Washington, where she is currently finalizing her work on a doctoral dissertation project.

Ewa Trebacz holds Masters degrees from the Academy of Music (1999, composition, B.Schaeffer) and the Academy of Economics (2000, computer science) in Krakow, Poland. She has been collaborating with animation artists from the Krakow Academy of Fine Arts since 1998, creating music and sound design for short films.

Trebacz's works have been performed, recorded and broadcast internationally, among others in Poland, Germany, Austria, Italy, Great Britain, France, the Netherlands and the USA. Recent commissions include Ephemerae, written for the Windkraft Ensemble for the Klangspuren Festival in Austria, and things lost things invisible for ambisonic space and orchestra, written for the 50th International Festival of Contemporary Music "Warsaw Autumn", for which she has received a prestigious recommendation of the 56th UNESCO International Rostrum of Composers (Paris, 2009).

Her current research is oriented towards experimental media, focusing on spatial aspects of the experience of a work of art, with a special focus on the two immersive techniques: ambisonics and stereoscopy. Her dissertation project is based on the idea of the separation and manipulation of spatial cues, both visual and sonic, in order to design a game of illusions, to create a continuum between the synthetic and live sources, and to challenge the borders of perceptual limitations.