The Ier is a river in Romania and Hungary.
Ier may also refer to:
Ier, the Romanian name for the river Száraz-ér in Romania and Hungary
The acronym IER may refer to:
Instance équité et réconciliation, a Moroccan human rights commission Institute of Education and Research International Economic Review, an economics journal Interurban Electric Railway, a division of the Southern Pacific Railroad in the U.S. Institut Eva Ruchpaul, a yoga training program Institute for Energy Research, a nonprofit public policy think tank New South Wales Institute for Educational Research, an Australian educational research institute Individual Electoral Registration, a reform of electoral registration in the United Kingdom proposed by the Coalition Government IER (company), a subsidiary of the Bollore group which owns Source London and electric car charging infrastructure