Alex Buck has received awards at the following contests
- Ars Electronica Forum Wallis, Leuk (Switzerland): 2024
- Concours biennal de composition acousmatique Métamorphoses, Ohain (Belgium): 2018, 2020, 2026
- Concurso de Composición Electroacústica Destellos, Mar del Plata (Argentina): 2022
- International Sonosfera Ambisonics Competition (ISAC), Pesaro (Italy): 2024
- MA/IN Matera Intermedia Competition, Matera (Italy): 2022, 2024
- Musica Nova International Competition of Electroacoustic Music, Prague (Czech Republic): 2019, 2023, 2025
- Música Viva — Concurso Internacional de Composição Electroacústica, Parede (Portugal): 2024
- Musicworks Electronic Music Composition Contest, Toronto (Ontario, Canada): 2019
- Prix Russolo, Annecy (Haute-Savoie, France): 2021, 2022