* 小野 (Ono): This is the most common reading and writing of the name, meaning "small field" or "small plain." It's a common Japanese surname, often associated with locations in Japan that have small fields or plains.
* 尾野 (Ono): This reading means "tail field" or "field at the end."
* 大野 (Ōno): This reading means "big field" or "big plain."
It's important to note that the meaning of the name Ono might vary slightly depending on the specific kanji characters used and the region of Japan where the family originated.
If you are interested in the specific meaning of a particular Ono family's name, you would need to know the specific kanji characters used in their family name.