| Topics in Tamil literature |
|---|
| Five Great Epics |
| Five Minor Epics |
| Bhakti Literature |
| Tamil people |

Naṉṉūl (Tamil: நன்னூல்) is a work on Tamil grammar written by a Jain ascetic Pavananthi Munivar between 1178–1216. It is the most significant work on Tamil grammar after Tolkāppiyam. The work credits Western Ganga vassal king Seeya Gangan of Kolar with patronising it.
About 20 commentaries have been written on Nannūl up to 19th century CE. Nannūl was divided into five sections: written language, spoken language, semantics, poetic language and rhetorical devices. The latter three sections have been lost, so only the parts on written and spoken language are extant today.
In Tamil, nal means good and nūl means book, so Nannūl means good book.
...he was a resident of Janajapuram (of Kancivaram) and [...] was patronised by Seeyangagan of Kolar (Mysore). Since Seeyangagan ruled in 1178–1216 the period of the work is evident.
One of the Ganga kings, Seeya Gangan, a contemporary of Kulōttunga III got Bhavananti to compose present Tamil standard grammar Nannūl.