Many Protestant churches in Northern and Western Europe and some Protestant churches in Northern America and in Australia/New Zealand see masturbation as not a sin.

Hinduism: Seeking bodily pleasure is only considered condemned for those who dedicate themselves to chastity. There are no references in Hindu religious texts to suggest that masturbation itself desecrates sexual purity. For those who are dedicated to chastity, this sin is absolutely minor, and can be absolved either by taking a bath, or by worshipping the Sun, or by saying three prayers.

Buddhism: The most used formulation of Buddhist ethics are the Five Precepts. These precepts take the form of voluntary personal undertakings, not divine mandate or instruction. The third precept is "to refrain from committing sexual misconduct".[220] However, different schools of Buddhism have differing interpretations of what constitutes sexual misconduct.

Wicca, like other religions, has adherents with a spectrum of views ranging from conservative to liberal. Wicca is generally undogmatic, and nothing in Wiccan philosophy prohibits masturbation. On the contrary, Wiccan ethics, summed up in the Wiccan Rede "An it harm none, do as thou wilt", are interpreted by many as endorsing responsible sexual activity of all varieties. This is reinforced in the Charge of the Goddess, a key piece of Wiccan literature, in which the Goddess says, "all acts of love and pleasure are my rituals".[235]

https://en.wikipedia.org/wiki/Religious_views_on_masturbation

This is a tiny fraction of the religions that sometimes or always allow masturbation. I'm not seeing any indigenous American, Australian, or Austronesian religions in this article.

Looks at Zeus

Unitarian-Universalists don't have a problem at all with masturbation, and they encourage you to explore and accept your body. That sounds pretty masturbation positive to me!