Henri Squire (born 27 September 2000) is a German tennis player.

[1] Squire made his ATP Tour main draw debut at the Halle Open as a wildcard, where he lost by retirement to Laslo Djere in the first round.

[2] In November 2022, he won his first ATP Challenger Tour doubles title at the Trofeo Faip–Perrel in Bergamo, partnering Jan-Lennard Struff.

In March 2024, he won his maiden ATP Challenger Tour singles title in Hamburg, defeating Clément Chidekh in the final.

211, he made his Grand Slam debut at the French Open after qualifying for the main draw[5] and defeated Max Purcell in five sets with a super tiebreak in the fifth for his first Major win.