Huna has a large number of correspondences with elements of other spiritual and philosophical systems, here are some of them:

Monism – All is ultimately One: Buddhism, Taoism, Qabalah, some forms of Christian Mysticism
Principles of Karma and Forgiveness: Eastern philosophies including the Upanishads, and Buddhism
Guardian Spirit: Native American systems, Hermeticism, Christian Mysticism
4/5 Elements: Alchemy, Eastern Philosophies, [...]