Avoiuli (from Raga avoi 'talk about' and uli 'draw' or 'paint')[1] is a writing system used by the Turaga indigenous movement on Pentecost Island in Vanuatu.

It was devised by Chief Viraleo Boborenvanua over a 14-year period, based on designs found in traditional sand drawings, and intended as a native alternative to the Latin alphabet.

Like the Western orthography used to write Raga, it represents the velar nasal ng and prenasalised consonant ngg using modified forms of the letters n and g respectively, but represents the labiovelar consonants bw, mw and vw using digraphs.

Capital letters in Avoiuli are similar to lowercase but are enlarged and drawn around a + shaped 'frame', a feature also seen in traditional sand drawings.

There are letters to transliterate the rest of the basic Latin script, as well as additional vowels for other languages of Vanuatu.