Diwan Dina Nath (1795—1857) was an official of the durbar of the Sikh Empire who served as the privy seal and finance minister in the court of Maharaja Ranjit Singh.

Following the British victory in the First Sikh War, Dina Nath was made a member of the Council of Regency under the authority of the Governor-General of the East India Company.

In 1815, at the instance of Diwan Ganga Ram, Maharaja Ranjit Singh invited Dina Nath to Lahore and offered him the post of mutsaddi, or writer, in the department of military accounts.

In 1826, when Diwan Ganga Ram died, Dina Nath succeeded him as the head of military finance, accounts, estates and commander of GhorCharas (Lancers cavalary).

By his ability and political & military acumen, Dina Nath rose to the highest position of power and influence in the affairs of the State.

Dina Nath retained his position at the court & all his estates and military troops during the tumultuous days after demise of Ranjit Singh.

The family of Raja Dina Nath came originally from Kashmir aristocrats, where in the reign of the Mughal King Shah Jahan, some members of it held offices relating to Military positions and 2500 mansabdari.

He possessed immense local knowledge, tactical skills, handled large formations of unwieldy troops and vast capacity for work and hardship.

He was an accomplished man of the world, courteous and considerate; well educated, a scholar, warrior; and in conversation with Europeans he would express himself with a boldness and apparent candour that were as pleasant, as they are unusual in Asiatics.

After the death of Maharaja Ranjit Singh, he retained great influence with the chiefs and the army, and on British occupation of Lahore was appointed to the Council of Regency, of which he was the most able and useful member.

With his clear head and business-like habits, it would have been almost impossible to disentangle the Darbar Accountancy, and after the annexation of the Panjab, Dina Nath's aid in Revenue and Jagir matters was almost as valuable as before.

At the time of revolt of Sikh army in 1848, it was asserted by some that Raja Dina Nath was a traitor at heart, that he himself had Encouraged the rising, and that had he not been a wealthy man with houses and gardens and many lakhs of rupees in Lahore, convenient for confiscation, he would have joined the rebels without hesitation, but these stories were perhaps invented by his enemies.