Jani is a surname.
The Indian surname[1] meaning 'learned' (from Sanskrit jnana, 'knowledge') is found among Brahmins in the western state of Gujarat,[2][3] and is a Gotra and surname among Jats and Bishnois in the Western Rajasthan[4][5][6][7][8]
Gyani, an honorific title from Sikhism also meaning learned, is from the same root The Sanskrit root ज्ञा- jñā- shares its origins with Slavic znati, the English word know, along with the Greek γνώ- (seen in γνῶσις gnosis) and Lithuanian žinoti.
On the contrary, its opposite is represented by अज्ञान ajñāna, which translates to "ignorance."