* Austine: This is a feminine French name, sometimes used as a variant of Augustine, but can also be considered a masculine name.
* Augustin: This is a masculine French name, derived from Latin and meaning "venerable" or "majestic". It's a popular name in France.
* Auguste: This is another masculine French name, also derived from Latin and meaning "majestic" or "venerable".
The choice depends on the context and desired meaning. "Austin" is perfectly acceptable in French, but these alternatives might be preferred if you want a more French-sounding name.