1. Iran Rials
The world’s least valued currency is the Iran Rial with an exchange rate of almost 30000 Rials for a Dollar (currently 28500), though locals use the term toman which means 10 Rials as a means to lessen the numbers for easier computation.
Now that you’ve seen the list of the 14 Least Valuable Currencies in the World, we can rest sure that in some places, we would be considered millionaires.