Stephan Mathieu (born October 11, 1967) works in the field of digital and electroacoustic music. His composition is largely based on period instruments, environmental sound and obsolete media which are recorded and transformed by means of experimental microphony, re-editing techniques and software processes involving spectral analysis and convolution.

Mathieu has created sound installations for the 4th century Aula Palatina at Trier and the 19th century ironworks Völklinger Hütte UNESCO world heritages and the Rosa-Luxemburg-Platz in Berlin.

Stephan is an avid collector of 78 RPM records from 1900-1928, and currently lives and works in Saarbrücken, Germany.