Who is the author of Juan tamad?

There isn't a single author attributed to "Juan Tamad" as a whole. It's more of a folklore character with origins in Filipino folklore.

Here's what we know:

* Oral tradition: Juan Tamad stories were passed down orally for generations.

* Variations: There are numerous variations of the stories, with different versions found in different regions of the Philippines.

* Modern adaptations: Many authors and storytellers have adapted and written down Juan Tamad stories in the 20th and 21st centuries, but they are based on the original folk traditions.

So, while there isn't one specific author, the Filipino people as a whole are the creators and keepers of the Juan Tamad tales.