The 24-year-old's Jack-the-lad character arrives in Walford in search of his father Vinnie Monks (Bobby Davro) and hopes to live with him. He's a real Casanova and can turn his hand to almost anything.
Speaking of his new role, he said: "I am thrilled and really excited to be joining EastEnders. Callum is a great part to play and I can't wait for him to make his mark in Walford."
Executive producer Diederick Santer added: "Callum - played by the very talented and striking Elliott Jordan - will bring a breath of fresh air to Walford. Bright, twinkly, and with the gift of the gab, he'll get the women of Walford all of a flutter."
Elliott, who has previously appeared in the BBC soap in a minor role, has already begun filming at Elstree Studios, home of EastEnders, and will first appear on screens in August.