- Brand origin
- United States
- Main production
- Several countries
Barnes & Noble is the largest retail bookseller in the United States and a leading retailer of content, digital media, and educational products.
Is the information about Knock Knock correct?
Updated: 10 February 2026 ·
About Knock Knock
Subsidiaries: Union Square & Co.
Ownership data is compiled from public sources and verified where possible. Spotted an error? Suggest a correction below.
