Yes. Despite having a shared language, many U.K. books are not widely read in the U.S. Authors like P.G. Wodehouse and Georgette Heyer are considered a bit niche in the U.S.

Others:

- Enid Blyton's children books - Five Find Outers, Secret Seven, Malory Towers etc.

- C.S. Forester - Horatio Hornblower series

Non-English authors:

- Georges Simenon - Inspector Maigret series (French detective genre)

- Sigrid Undset - Kristin Lavransdatter (Scandinavian)

Some foreign authors whose popularity is rising in the U.S. at the moment

- Elena Ferrante (Italian)

- Karl Ove Knausgaard (Norwegian)

On a related note, Wikipedia has a more comprehensive list of best-selling world authors [1]. Ironically many of top writers in the English language aren't widely read in America.

[1] https://en.wikipedia.org/wiki/List_of_best-selling_fiction_a...