Miķelis Ļaksa (born 2 October 1986), known professionally as Markus Riva, is a Latvian singer.

Riva worked at Capital FM as a DJ, and has composed music for various television shows.

[2] In 2016, Riva entered with his song "I Can", and came third in the semi-final, however since he was in neither the top two in the jury voting or the televote, he did not reach the final.

[3] An exponent of the Ape Music, since 2017 Riva has been hosting X Faktors, the Latvian version of The X Factor.

[10] He returned to Supernova in 2022 with the song "If You're Gonna Love Me", but didn't qualify to the final.