Sanju Viswanath Samson is an Indian international cricketer, who is a member of the white-ball formats of Indian national team. A right-handed wicket-keeper-batter, he captains Rajasthan Royals in the Indian Premier League and Kerala in domestic. He was a part of the Indian team which won the 2024 T20 World Cup. He made his international debut in 2015 in a T20 international against Zimbabwe. He is the only player to score three centuries in T20 internationals in a calendar year (2024). He is the first Indian wicket keeper to score a century in a T20 international. He is also the first Indian to score two consecutive centuries in T20 Internationals.

Samson was born on 11 November 1994 into a Malayali Christian family in Pulluvila, a coastal village near Vizhinjam in Thiruvananthapuram district of Kerala. His father, Samson Viswanath, was formerly a police constable at Delhi Police and a retired football player who has represented Delhi in Santhosh Trophy and his mother, Ligy Viswanath is a housewife. His elder brother Saly Samson has represented Kerala in junior cricket and currently works in the AG's office.

Samson was named by Kolkata Knight Riders in its player pool ahead of 2009 Indian Premier League. He was signed by Kolkata Knight Riders ahead of 2012 Indian Premier League but did not get to play and was released ahead of the 2013 season. He was signed to play for Rajasthan Royals in 2013. He made his IPL debut for Rajasthan against Kings XI Punjab on 14 April 2013 after the regular wicket-keeper Dishant Yagnik failed to recover from an injury. In his second match, he scored 63 runs from 41 balls, becoming the then youngest player in IPL to score a half-century. He won the Emerging Player award of 2013 season with 206 runs and six stumpings from 10 innings.

Sanju married his long-time girlfriend Charulatha Remesh, a native of Thiruvananthapuram, on 8 September 2018 through his social media platforms. The couple were college-mates from Mar Ivanios College. The wedding took place in a private ceremony at Kovalam on 22 December 2018. The wedding reception took place in Nalanchira on the same day with the only notable cricketer to attend being Samson's former coach and mentor, Rahul Dravid.