Horace William Petherick (1839-1919) was an artist and illustrator, a violin connoisseur, and a writer. As an artist, four of his works are in public collections in the UK; as an illustrator, he illustrated over 100 books, some of which are still in print, and his work can be found in digital collections at the British Library, the Osborne Collection of Early Children's Books, and the Baldwin Library of Historical Children's Literature; as a violin connoisseur, he owned both a Stradivarius and a del Gesù; and as an author, three of his books are still in print.

Rosa Clementina Petherick was a British book illustrator.