Young Prince Tyson Fury the Second was born on Friday to his wife Paris in hospital.
The baby joins his existing children, daughter Venezuela and son Prince.
Finally got him, I'm so blessed, my boy, PRINCE TYSON FURY THE SECOND. Blessed be the Lord, Jesus Christ. pic.twitter.com/K2P5CMVH6H
— #Gypsyking (@Tyson_Fury) July 16, 2016
The Gypsy King & young prince Tyson pic.twitter.com/KNqLzoOxLi
— #Gypsyking (@Tyson_Fury) July 16, 2016
On Twitter Fury said: "Finally got him, I'm so blessed, my boy Prince Tyson Fury the Second. Blessed be the Lord, Jesus Christ."
The champion boxer later posted that he was out "baby head wetting" and invited any of his Twitter followers to come to Morecambe Bay. "It's on me," he said.
Fury is known for being proud of his Christian faith and often speaks about Jesus in public.
He has courted controversy in the past for comments about gay people and women.
