The Sinhalese alphabet (Sinhalese: සිංහල අක්ෂර මාලාව) (Siṁhala Akṣara Mālāva) is an alphabet used by the Sinhalese people and most Sri Lankans in Sri Lanka and elsewhere to write the Sinhalese language, as well as the liturgical languages Pali and Sanskrit.The Sinhalese alphabet, one of the Brahmic scripts, is a descendant of the ancient Indian Brahmi script and closely related to the South Indian Grantha script and Kadamba alphabet.

The Sinhalese script is an abugida written from left to right. Sinhalese letters are ordered into two sets. The core set of letters forms the śuddha siṃhala alphabet (Pure Sinhalese, ශුද්ධ සිංහල), which is a subset of the miśra siṃhala alphabet (Mixed Sinhalese, මිශ්‍ර සිංහල).