Etai or ETAI may refer to:
Etai, one of the names of the oft-renamed Eagle (freighter) Electronic Transactions on Artificial Intelligence (ETAI), a scientific journal Ethyltrifluoromethylaminoindane (ETAI), a psychoactive drug and research chemical
People Etai Pinkas (born 1973), Israeli LGBT leader Etai Yamada (1900–1999), head priest of the Japanese Tendai school of Mahayana Buddhism
See also Itai, Hebrew given name