* MacAoidh: This is a common and widely accepted spelling, reflecting the pronunciation and meaning of the name.
* MacAois: A variant spelling, also used.
The best choice would depend on the region and the individual's preference. If you're looking to use it for a specific purpose (e.g., a document, a marker on a map), it's advisable to check with a local Gaelic speaker or authority on the matter to ensure accuracy.