| Honorific Prefix: | Colonel[1] |
| Hoshiar Singh | |
| Honorific Suffix: | PVC |
| Birth Date: | 5 May 1936[2] |
| Birth Place: | Sisana,[3] Rohtak District, Punjab Province, British India (now in Sonipat District, Haryana, India) |
| Death Place: | Jaipur, Rajasthan, India |
| Birth Name: | Hoshiar Singh Dahiya |
| Allegiance: |  India |
| Serviceyears: | 1963-1988 |
| Rank: | Colonel |
| Servicenumber: | IC-14608A |
| Unit: | The Grenadiers |
| Commands: | 3 Grenadiers |
| Battles: |
|
| Awards: | Param Vir Chakra |
Colonel Hoshiar Singh Dahiya, PVC (5 May 1930 – 6 December 1998) was an Indian military officer and a recipient of India's highest military honour, the Param Vir Chakra, for his gallantry during the Indo-Pakistani war of 1971.
Hoshiar Singh Dahiya was born in Sisana village, Sonipat district, Haryana to Choudhary Hira Singh in a Jat family. After his schooling and one year's study at the Jat College, Rohtak, he joined the Army. He was married to Dhano Devi, who is still alive as of December 2021.[4] He was commissioned in The Grenadiers Regiment of the Indian Army on 30 June 1963,[5] and was promoted lieutenant on 30 June 1965.[6]
His first posting was in NEFA. In the 1965 Indo-Pakistan war, he saw some action in the Rajasthan sector,[7] for which he was mentioned in despatches.[8] He was promoted to captain on 30 June 1969.
The Param Vir Chakra citation on the Official Indian Army Website reads as follows:
Singh was promoted to substantive major on 30 June 1976,[9] subsequently serving for two years as an instructor at the Officers Training School, Madras (now Chennai). In 1981 he was posted as an Instructor at the Indian Military Academy, Dehra Dun, and was promoted to lieutenant-colonel on 8 April 1983,[10] he eventually rose to command of his battalion. Having reached retirement age for his rank, Singh retired from the army on 31 May 1988 with the honorary rank of colonel.[11] He settled in Jaipur, but frequently visited his village of Sisana and successfully encouraged many residents to join the armed forces.[12] He succumbed to a cardiac arrest on 6 December 1998, aged 61, and was cremated with full military honors at Jaipur. He was survived by three sons, two of whom followed their father into the army as commissioned officers in the Grenadiers, with one joining the 3rd Grenadiers.[12]
Mohanlal reprised Major Hoshiar Singh's character as Major Sahadevan in the 2017 Malayalam film, .[13]