John Barsad is a character in Charles Dickens' 1859 novel, A Tale of Two Cities.
Cruncher initially blames his wife's praying and thinks Roger Cly has been removed through spiritual means.
Carton discovers Barsad in Paris much later and finds him to be Miss Pross' long-lost brother Solomon.
In the final prophetic chapter of the book, Barsad, along with many others, is revealed to die by the guillotine at some time in the future.
Barsad is described in Book 2, Chapter 3 of A Tale of Two Cities as "one of the greatest scoundrels upon the earth since accursed Judas-which he certainly did look rather like."