Ajit Pal Singh was an Indian professional field hockey player from Sansarpur, Punjab. He was the captain of the Indian hockey team. He was conferred the Arjuna Award in 1970, and awarded it in 1972. He played at centre half position. He was captain of the Indian team at the Hockey World Cup 1975 held in Kuala Lumpur, Malaysia. He was born on the 1st of April 1947 at Sansarpur, a small village near Jallandhar Cantonment of Punjab, which was famous as a breeding ground for the Hockey stars as this village had been home to a number of International Hockey players who had done the nation proud with their commendable performance in the game. He studied at the Cantonment Board Higher Secondary School, Jallandhar Cantonment and at the age of 16 years represented the Punjab State Schools Hockey team in the year 1963. During his initial days, Ajit used to play at the Full Back position. He moved to the Lyallpur Khalsa College, Jallandhar in the year 1964, and stayed there for a period of 4 years leading the college to 3 victories in the Punjab University College tournament. 

Ajit Pal Singh made his debut in International Hockey with a tournament played at Bombay in 1960. He was selected in the Indian Hockey team that visited Japan in 1966, and participated in the Pre-Olympic tournament held in London the next year. Further, he played in the Olympic Games Mexico 1968 and delivered a brilliant performance although the Indian Hockey squad stood at 3rd spot at the event. Ajit played for the Indian Hockey team at Bangkok Asian Games 1970, and was named the Captain of the Indian squad that played at Post Shuan Tournament held at Singapore in 1971, and Tehran Asian Games 1974. The Indian team managed to grab a Silver Medal at both the events. He was a part of the Indian squad at Munich Olympic Games 1972, where the team finished at 3rd spot getting a Bronze Medal. He led the Indian Hockey team to World Cup Hockey tournament held at Kuala Lumpur in 1975 leading the team to win the tournament and also at Montreal Olympic Games 1976 where the Indian team fared really bad and finished at the 7th spot. After this debacle, Ajit Pal Singh retired from International Hockey, although he participated in his last International Hockey event in 1980 at Champions Trophy Tournament, Karachi. Even after his retirement from International Hockey, Ajit continued to play in Domestic Hockey Circuit for Border Security Force (B.S.F.) team.