blackwave. (also known as blackwavedot) is a Belgian hip-hop duo composed of producer Willem Ardui and rapper Jay Walker. Their influences include The Roots, Prince, Parliament-Funkadelic and Brockhampton. The group, in an interview with Billboard, said "We love incorporating all kinds of different genres in our music and challenging ourselves to always try something different."

The band released their first album, Mic Check, in 2017. Their second album, Are We Still Dreaming?, was released in 2019 and reached 4th place in the Belgium Top 200 Albums. Their third album, No Sleep in LA, was released in 2022 and peaked in first place for one week.

In 2019, blackwave. was nominated for the 2019 MTV Europe Music Awards in the 'Best Belgian Act' category, losing out to MATTN.