Lucas Carstensen (born 16 June 1994) is a German professional racing cyclist, who currently rides for UCI Continental team Roojai Insurance.

[4] Born in Hamburg, Carstensen was the leader during the 2017 Tour de Tunisie.

[5] He finished the event winning the points classification.

[8] Carstensen won the first stage at the 2018 La Tropicale Amissa Bongo.

[10] He retained the race leader's yellow jersey on the second day.