Is there a list of US banjo manufacturer?

Yes, there are several notable banjo manufacturers in the U.S. Some of the prominent ones include Deering Banjo Company, Gibson, and Gold Tone. Additionally, smaller and boutique makers like Stelling Banjo Works and Prucha Banjos are also recognized for their craftsmanship. For a comprehensive list, you might want to check industry directories or music forums dedicated to string instruments.