What Babylonian name was Daniel's friend Hananiah given?

Answer: Shadrach

Hananiah became Shadrach, Mishael became Meshach, and Azariah became Abednego.

“The chief official gave them new names: To Daniel he gave the name Belteshazzar; to Hananiah, Shadrach; to Mishael, Meshach; and to Azariah, Abednego.”— Daniel 1:7 (BSB)