| Balbir Singh Grewal | |
| Nickname: | Balbir Singh (Railways) |
| Nationality: | India |
| Sport: | Field hockey |
| Birth Date: | 21 September 1945 |
| Birth Place: | Lyallpur, Punjab Province, British India (present-day Faisalabad, Punjab, Pakistan) |
| Relatives: | Gurbux Singh Grewal (brother) |
| Event: | Men's team |
Balbir Singh Grewal (born 21 September 1945), also known as Balbir Singh (Railways), is a retired Indian field hockey player. He played for Railways in the Indian Senior National Hockey Championship. He was part of the Indian teams that won the bronze medal at the 1968 Summer Olympics, gold medal at the 1966 Asian Games and silver medal at the 1970 Asian Games.[1] [2] His brother was the Indian hockey international Gurbux Singh Grewal.[3]