The West Ham right-back has called time on his spell with Sabri Lamouchi’s side after playing 35 times in a career spanning eight years and included appearances at the 2006 and 2010 World Cups.
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Demel admits he now wants to focus solely on his club commitments with the Hammers in the Premier League after missing the majority of their promotion campaign with injury.
"I have decided to quit international football and it was not an easy decision for me," Demel told Sky Sports.
"I have enjoyed playing for my country and going to the 2006 and 2010 World Cup and my country means a great deal to me.
"I wish Ivory Coast success in the future and I hope they do well at the Africa Cup of Nations.
"However, I am now 31 and it feel it is the right to quit so that I can concentrate on West Ham.
"Last season I was injured a lot and I want to prepare and make sure I perform for West Ham in the Premier League."