Deniz Aslan is a composer and a bassoonist specializing in new music. He was born in 1997 in Ankara, Turkey. Classically trained in bassoon for ten years, he received his Bachelor's and Master's degrees in composition from Bilkent University under the supervision of Tolga Yayalar. As of 2024, he is a DMA student and an Assistant Instructor at the University of Texas at Austin and continuing his studies under the supervision of Januibe Tejera.

Deniz has worked with ensembles such as Arditti Quartet, Black Pencil, Yurodny Ensemble, Collegium Novum, HANATSUmiroir, United Instruments of Lucilin, Splinter Reeds, Oerknal, MotoContrario, Reverberation Percussion, Anatolian Wind Quintet, Hezarfen Ensemble, and his music has been performed in Turkey, United States, Brazil, Italy, and Luxembourg.

Deniz was a finalist in the 2023 Prix CIME Electronic Music Competition and the 2021 Balkan Composer Competition in Prishtina.