Last name Tanmi (Tanmi 
) , all over the world, is a rare family name. The cognomen Tanmi is characteristic of Cameroon, where it is a rare surname, Bangladesh, where it is a very rare surname, and France, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in Bangladesh, Cameroon, and India. Likewise, Tanmi is the forename as well as the last name.