President Michael D Higgins paid tribute to his 'legacy of outstanding leadership' which captured the imagination of the nation.
The Taoiseach has described him as 'one of the great characters of the football world, while the FAI says he was "the manager who changed Irish football forever".
Jack Charlton is best known in Ireland for his phrase 'Put em under pressure' and leading the country to the last eight of the World Cup in 1990.
In 1966, he along with his brother Bobby helped England to win their only World Cup.
He died at his home in Northumberland in England last night at the age of 85.
His family say the loss leaves a huge hole in their lives.
He was a keen fisher throughout Ireland, and told a story about when he brought Galway to a standstill to a documentary about his career as Ireland manager.
The FAI have said in a statement that Jack Charlton was a manager who changed Irish football forever.
