Luca Castelnuovo

Luca Castelnuovo (born 29 January 1997) is a Swiss tennis player.

Castelnuovo has a career high ATP singles ranking of 543 achieved on 19 August 2019. He also has a career high doubles ranking of 321 achieved on 19 July 2019.

Castelnuovo has won 1 ATP Challenger doubles title at the 2021 Dutch Open with Manuel Guinard.