Gagan Ajit Singh is a former Indian field hockey player who rose to prominence in the late 1990s and early 2000s. Known for his exceptional speed, agility, and goalscoring ability, he became a key figure in the Indian national team. Singh primarily played as a forward, often positioned as a center forward or inside forward, where his attacking prowess could be best utilized. He represented India in numerous international tournaments, including the Olympic Games, World Cups, and Champions Trophy.

Singh's contributions to Indian hockey were significant, and he was instrumental in several of the team's successes during his playing career. He was known for his skillful stick work, his ability to create scoring opportunities, and his clinical finishing inside the penalty box. His performances earned him recognition as one of the leading hockey players in India and a prominent figure in international hockey circles. Beyond his individual skills, Singh was also valued for his teamwork and leadership qualities on the field. After retiring from professional hockey, he has remained involved with the sport, often contributing as a commentator or analyst. He continues to inspire young hockey players in India with his achievements and dedication to the game.