| Type: | Yoruba |
| Member Of: | Orisha |
| Venerated In: | Yoruba religion, Umbanda, Candomble, Santeria, Haitian Vodou, Folk Catholicism |
| Deity Of: | Herb, Plant, Matter, Nature, Herbalist, Magic, Civilization, Enlightenment |
| Color: | Green |
| Cult Center: | Olosanyin |
| Abodes: | Forest and Air |
| Animals: | Bird |
| Other Names: | Osanyin Ni Baba Oogun |
| World: | Yorubaland |
| Weapon: | Osanyin staff |
| Adherents: | Onishegun |
| Gender: | Male |
| Mount: | Ekiti Mountain |
| Symbols: | One-eyed, One-armed, One-legged |
| Battles: | |
| Region: | Nigeria, Benin, Latin America |
| Ethnic Group: | Yoruba |
| Consort: | Orunmila, Babalú-Ayé, Aroni, Sango, Aja |
| Symbol: | Leaf, Herb |
| Siblings: | Orunmila |
| Children: | 3, including Oogun |
Ọsanyin (Yoruba: Ọ̀sanyìn, rendered Osaín/Ossain/Ossaím in Latin America, Ague (Age) in Fon)[1] is the orisha who had the omniscient knowledge of leaf, herb and matter. He is also known for healing and displaying magic and creating technological tools, and is popularly considered as a herbalist, magician, and technologist. He is the creator of Onishegun. Osanyin is known as a powerful wizard and master of all spells and crafts found in the wild and untamed areas of nature. In America, he is syncretized with Saint Joseph. Osanyin is described as embodying the features of leaf and herb, representing healing, curse, magic, knowledge, and many other attributes found within leaf and herb.