Is there other ways to spell Billy?

While "Billy" is the most common spelling, here are some variations:

Formal:

* William (full name)

* Wilford (less common, but still a possibility)

* Wilhelmina (feminine form, though often shortened to "Billie")

Informal:

* Willy

* Bill

* Billie (more commonly used for girls)

* Bil

* Wil

* Will (short for William, but can also be a separate name)

Other:

* Bille (a more old-fashioned spelling)

* Billi (a less common spelling)

It's important to note that some of these spellings are more common than others, and some are more associated with specific regions or time periods. Ultimately, the best spelling depends on your personal preference.