Jaidayal Dalmia

He was married to Krishna Devi and had seven sons and two daughters. The name of his sons are Vishnu Hari Dalmia, Nar Hari Dalmia, Mridu Hari Dalmia, Jai Hari Dalmia, Ajay Hari Dalmia, Yadu Hari Dalmia and Raghu Hari Dalmia, who inherited their stakes in Dalmia Group after his demise in 1993. He had two daughters Uma Devi and Usha Devi.

He was also the author of books like – Theology and Untouchability (Dharmshashtra aur Asprishyata) and A Review of beef in ancient India (Pracheen Bharat mein Gomaans – Ek samiksha) published in 1971. He was also involved in publishing and translation of many Bengali Vaishnav literature to Hindi.

Shortly after the independence, the Dalmia empire was divided among Ramkrishna Dalmia, Jaidayal Dalmia and Sahu Shanti Prasad Jain, son-in-law of Ramkrishna. Dalmianagar and publishing co. Bennett, Coleman & Co. Ltd. was handed over to Sahu Shanti Prasad Jain and Jaidayal Dalmia got the cement factories of Rajgangpur, Dalmiapuram and two factories of Pakistan. In the year 1964 both factories in Pakistan were sold off.

With wide interest in machinery, Jaidayal Dalmia played major role in technical functions of all the factories in Dalmianagar and other plants as well. Soon after establishing the Rajgangpur factory called Orissa Cements. Jaidayal later started fire bricks refractory in Rourkela in the year 1954.

He was great philanthropist and from 1951 onwards established many trusts that run private hospitals, schools, widow houses, dharamshalas, etc. He was vocal social reformist, who supported anti cow-slaughter movement and was deeply involved in construction of Krishna Jamnabhoomi Kesava Deo Temple.

Ramkrishna Dalmia ventured in banking sector and started Bharat Bank with branches at many places in India. He also entered in Aviation business and acquired interests in Bharat Insurance Company and controlling interests in Punjab National Bank. In the automotive sphere, one company of the Group, Allen Berry & Co. Limited, purchased the entire lot of American surplus disposal vehicles, numbering about 50,000, after World War II. This company ran vast workshops in various parts of India till the 1950s when it was disbanded. Knowing that media played an extremely major part in the development of the nation, he acquired Times of India and started news paper in Hindi & Bengali as well. He purchased Govan Bros. and ventured in Chemicals too. At the time, the Dalmia companies together ranked third among India's major industrial groups after the Tatas and the Birlas.

He learned his business from his elder brother and played a major role in establishing Dalmia Industries and later founded Dalmia Cements in 1935, which is now run by his sons and grandsons.

In the year 1932–33 Ramkrishna along with a businessman from Bihar Nirmalkumar Jain started a sugar mill, Jaidayal was appointed to look after the mill, with his keen interest and dedication he got the mill commissioned within short span of 1 year. Within a year one more sugar mill, Rohtas Industries Ltd was started near Dehri-on-sone at Dalmianagar. Jaidayal supported his elder brother in all his ventures and showed immense interest in the business. Later on, Dehri-on-sone was named .

Jaidayal Dalmia (1904–1993) was born into Hindu Agarwal family and was one of the leading industrialists and philanthropists of India. He was one of the co-founders of Dalmia Group and younger brother of Ramkrishna Dalmia

Jaidayal Dalmia was born on 11 December 1904 in town of Chirawa in Rajasthan.