Paramanu is a technical term in Hinduism. It is defined as the smallest and indivisible particle of matter. In Hindi and Bengali language paramanu refers to the atom.^[1]

In Jainism it is one of the two types of Pudgala (matter), the other being Skandha.^[2][3] It also helps to define smallest measure of space. All the Parmanus occupy exactly same amount of space. The measure of the space occupied by one Parmanu is called Pradesha.^{[citation needed]}