No — reliable public sources do not currently confirm Arthur Masuaku's left-handedness.

Arthur Masuaku is a professional footballer who plays as a left-back for Süper Lig club Beşiktaş and the DR Congo national team. Born in France, he represents the Democratic Republic of Congo at the international level.

Masuaku began his senior career in France with Valenciennes before moving to Olympiacos in Greece, where he won the Super League Greece title. His impressive performances there earned him a move to West Ham United in the Premier League in 2016.

Known for his pace, dribbling ability, and offensive contributions from the full-back position, Masuaku has been a dynamic player on the left flank. He joined Beşiktaş on loan in 2022, which was later made permanent.

Throughout his career, Masuaku has been a consistent performer, contributing both defensively and in attack. His international career with DR Congo has seen him become a regular fixture for the Leopards.