What is Jonah's last name?

Answer 1

In that time, middle names were not common. Sometimes they may use ben or beni or bat (pronounced as a hard th) to indicate they were a son of or daughter of the person whose name follows much like we use a surname (which was also not common in Israel)...Simon bar-Jona meant Simon son of Jonah, Moschiach ben-David means Messiah son of David...Yit sem Leoo means Yit son of Lau...John O'Reilly meant John of the Reilly clan...etc

Answer 2

They didnt have last names back then. They had like....I don't know if even these types of last names were out yet, and I don't really understand them anyway, but an example of a person who had the "last name" I'm talkin about would be Joan of Arc.

The Bible reads, "Now the word of the LORD came unto Jonah the son of Amittai..." (Jonah 1:1). If people had any last name at all in those days, it was frequently the name of their father, or the name of the town from whence they came. In Jonah's case, his father's name was Amittai. The way you say "son of" in Hebrew is "ben." So he is known as Jonah ben Amittai (יוֹנָה בֶן-אֲמִתַּי). That's as close to a last name that Jonah is given. If you want to get creative with it, you might anglicize it and name him Jonah Benamittai, or even Jonah Amittaison.