Sander Gillé (born 15 January 1991) is a Belgian professional tennis player who specializes in doubles.

Gillé won his first ATP Tour doubles title at the 2019 Swedish Open with fellow Belgian Joran Vliegen.

They also reached the quarterfinals at the 2020 US Open (tennis) losing to the eventual runners-up Mektic/Koolhof, their best showing as a pair at a Grand Slam thus far.

At the 2024 Monte-Carlo Masters with Vliegen, they defeated wildcard pair of Jannik Sinner and Lorenzo Sonego, defending champions and second seeds Austin Krajicek and Ivan Dodig in the second round, and sixth seeds Tim Pütz and Kevin Krawietz to reach the semifinals.

They became just the second and third Belgians to win a Masters 1000 doubles title after Xavier Malisse won in Indian Wells in 2010.