- Felicity Books - Second-hand, used books for sale on-line. Categories from the rare, spiritual, crime, and fantasy.
- Fine Print - selected books for antiquarian and rare book collectors and many special interests.
- Finn's Fine Books - A catalogue of facsimile books (exact replicas) of old manuscripts, Leonardo's works and other limited edition books.
- Flatsigned Books - Specializes in signed first editions.
- Foundling Books - Specializes in children's books, particularly Boy Scout and Disney related items. Also used and rare books on a wide variety of other topics.
- Frank & Carol's Books - Secondhand books, categorized by author and subject. Based in Norfolk, England.
- Frogtown Books - Used, rare and out-of-print books and autographs in a variety of categories.
