Haik M. Martirosyan is an Armenian grandmaster born in 2000 in Byuravan, in the Ararat province of Armenia. He won the under-16 section of the World Youth Chess Championship in 2016 and was awarded the grandmaster title by FIDE in 2017, at the age of 17.

Martirosyan won the Armenian Championship in 2018 and represented Armenia at the 43rd Chess Olympiad in Batumi the same year. He won the Zurich Christmas Open in 2018, shared first place at the 2019 Aeroflot Open, finishing second on tiebreak, and reached the fifth round of the 2021 FIDE World Cup, where he defeated Shakhriyar Mamedyarov.