Dheeraj Singh Moirangthem was born on 4 July 2000 in Manipur, India. He is a professional Indian footballer. He has a height of five feet nine inches. Singh did his primary and secondary schooling from his hometown Manipur, India. He got selected in India under 17 and got participated in the year 2017 in FIFA U-17 World Cup which took place in India. Singh was the first choice for the team as a goalkeeper and was part of all the matches that India have played. Then he got selected in India under 23, whereas he was there to join and to be a part of the U21 Indian national team.

Singh again made himself to become the first choice goalkeeper for India U23 for the 2020 AFC U-23 Championship. He won his own position in the team after a great season with the Kerala Blasters FC in the 2018-19 ISL Season. Singh made his debut with the apponent team Qatar U23 in an international friendly preparatory match for the 2019 AFC U23 Championship Qualifiers. Soon, he represented Kerala Blasters FC in the session 2018–19 Indian Super League season. As usual, he was the first choice goalkeeper for this club too. He made several 13 league matches and a super cup match being in the club.