Konstantīns Calko (born 13 April 1994) is the first Latvian racing driver competing in the 24 Hours of Le Mans.

Next year Calko raced in Radical European Masters and secured Champion title in Supersports category as well took World Vice-Champion title in DD2 category in Rotax Grand Finals held in Portimao [1] In 2013 Calko made his World Touring Car Championship debut with Campos Racing driving a SEAT León WTCC in the last round in Macau.

[2] In February 2015 it was announced that he would make his European Le Mans Series debut with SVK by Speed Factory driving a Ginetta LMP3.

[3] In 2017 Calko fulfilled his life dream and competed in 2017 24 Hours of Le Mans race with ARC Bratislava.

After few months later in Asian Le Mans Series 2017/2018 season together with the same team Calko finished 3rd in championship.