The sub-commentaries (Pali: ṭīkā) are primarily commentaries on the commentaries (Pali: aṭṭhakathā) on the Pali Canon of Theravada Buddhism, written in Sri Lanka. This literature continues the commentaries' development of the traditional interpretation of the scriptures. (Note that some commentaries are apparently also named with the term ṭīkā.) These sub-commentaries were begun during the reign of Parākramabāhu I (1123–1186) under prominent Sri Lankan scholars such as Sāriputta Thera, Mahākassapa Thera of Dimbulagala Vihāra and Moggallāna Thera.
The official Burmese collected edition contains the following texts:
There are other tikas without this official recognition, some printed, some surviving in manuscript, some apparently lost. The name tika is also applied to commentaries on all non-canonical works, such as the Mahāvaṃsa. There are also some sub-commentaries in vernacular languages.
Extracts from some of these works have been translated, usually along with translations of commentaries.