Ipes

IPES may refer to:


 * Instituto de Pesquisas e Estudos Sociais, a Brazilian think tank of the 1960s
 * Inverse photoemission spectroscopy
 * Ipos, an Earl and powerful Prince of Hell in demonology
 * Tabebuia, Ipê trees
 * Lapacho, a medical tea
 * Improved Proposed Encryption Standard