Isha may refer to:
Isha (Fantasy), a fictional deity from Warhammer Fantasy
Isha Foundation, a non-profit organization founded by Sadhguru Jaggi Vasudev
Isha prayer, the Islamic night-time daily prayer
Isha Upanishad, the Hindu religious text
International Students of History Association (ISHA)
Storm Isha, part of the 2023–24 European windstorm season
