The word gaṇa (Sanskrit: गण Sanskrit pronunciation: [ɡɐ.ɳɐ́]) in Sanskrit and Pali means "flock, troop, multitude, number, tribe, category, series, or clan". It can also be used to refer to a "body of attendants" and can refer to "a company, any assemblage or association of men formed for the attainment of the same aims". The word "gana" can also refer to councils or assemblies convened to discuss matters of religion or other topics.

In Hinduism, the Gaṇas are attendants of Shiva and live on Mount Kailash. Ganesha was chosen as their leader by Shiva; the deity's title is gaṇeśa or gaṇapati, meaning, "lord or leader of the ganas".

The term gana is employed in the Rigveda in reference to the Maruts:

śardhaṃ-śardhaṃ va eṣāṃ vrātaṃ-vrātaṃ gaṇaṃ-gaṇaṃ suśastibhiḥ |
anu krāmema dhītibhiḥ ||

— Verse 5.53.11

Let us wait with sacred praises and holy rites upon your several strength, and separate troop, and individual company.

Chapter 108 of the Shanti Parva of the Mahabharata describes a discussion between Yudhishthira and Bhishma regarding the strength of the ganas, how they defend themselves from disunion, the subjugation of their enemies, and forging friendships. Bhishma's answers to these questions are recorded in the form of shlokas (verses) from 16 – 32 of the chapter.

In the Shiva Purana, after Ganesha's life was restored by Shiva, he was crowned as the leader of the ganas by the gods.