Hadiyya (speakers call it Hadiyyisa, others sometimes call it Hadiyigna, Adiya, Adea, Adiye, Hadia, Hadiya, Hadya) is the language of the Hadiya people of Ethiopia. It is a Highland East Cushitic language of the Afroasiatic family. Most speakers live in the Hadiya Zone of the Southern Nations, Nationalities, and People's Region (SNNPR).^[2]

The closely related Libido language, located just to the north in the Mareko district of Gurage Zone, is very similar lexically, but has significant morphological differences. Hadiyya has a set of complex consonant phonemes consisting of a glottal stop and a sonorant: /ʔr/, /ʔj/, /ʔw/, /ʔl/.

In their book (English version 1999), Braukämper and Mishago compiled a reasonably sized collection of the presently vanishing art of traditional songs of Hadiyya. The lyrics adhere to the strict rule of Hadiyya traditional poetry where rhythmical rhyming occurs at the beginning of the verse.^[3]

The New Testament of the Christian Bible has been translated into Hadiyya, published by the Bible Society of Ethiopia in 1993. It was originally produced using the traditional Ethiopic syllabary. A later printing used the Latin alphabet.^{[citation needed]}