The Balinese alphabet (Balinese: Aksara Bali) is an abugida that was used to write the Balinese language, an Austronesian language spoken by about three million people on the Indonesian island of Bali. The use of the Balinese script has mostly been replaced by the Latin script. Although it is learned in school, few people use it. It is mostly used in temples and for religious writings.

The Balinese script was derived from the Old Kawi script, which ultimately derived from the Brāhmī script, the root of all the Indic and Southeast Asian abugidas. The abugida consists of 47 characters, 14 of which are vowels (aksara suara), and the remaining 33 are consonants (aksara wianjana).

Vowels (aksara suara) can be written as independent letters, or by using a variety of diacritical marks (pangangge). The independent forms are used when the vowels appear in initial position. They are described in the following list:

Like most abugidas, each consonant (aksara wianjana) has an inherent vowel of /a/. Other vowels are indicated by using diacritics (pangangge), which can appear above, below, to the left, or to the right of the consonant.