The Dadian family was an Ottoman Armenian family that was famous for their industrial activities within the Ottoman Empire. Besides being prominent factory owners (the family had a monopoly on the empire's gunpowder industry for more than a century), members of the family also served as political advisers. The Dadians were also well acquainted with Ottoman banking.^[1]

Ohannes Dadian was the director of the gunpowder factory in 1845.^[2]