Pallathur Venkatachalam Nandhidhaa (Tamil: பள்ளத்தூர் வெங்கடாசலம் நந்திதா) (born Apr 10, 1996) is an Indian chess player from the state of Tamilnadu, who holds the FIDE titles of Woman Grandmaster (WGM) and Woman International Master (WIM). She is the 17th Woman Grandmaster of India. She was part of 30 member Indian Chess Olympiad team which participated in 44th Chess Olympiad in Chennai, the capital city of Tamil Nadu, India from 28 July to 9 August 2022. She has recently won an individual Gold in Asian Chess Championship held at New Delhi on 3 November 2022. She scored an unbeaten and impressive 7.5/9 to clinch the title, thereby also qualifying for the .