Arjun Erigaisi (born 3 September 2003) is an Indian chess grandmaster. He is part of the Indian wunderkind trio (with Gukesh and Pragg). In 2022, he signed a landmark $1.5 million sponsorship deal with Quantbox, the largest in Indian chess history. Arjun is known for his creative, non-standard opening choices and tactical sharpness. He crossed the 2750 rating barrier in 2024. He has dominated the "open" tournament circuit, winning massive Swiss events like the Qatar Masters.