Muamba has been a key player in Birminham’s promotion this season and has signed a three-year-deal with the club.
Birmingham boss Steve Bruce said: “This is a great signing for us. I’m delighted.”
Muamba told the Birmingham website: “The fans were probably the key reason why I have signed.
“I’m looking forward to the Premiership and going to put myself about.”
Bruce added: “I thought his performances towards the end of the season and the way he drove the team on was unbelievable for a young kid.
“He has got the attitude and athleticism to play in the Premiership and I’m sure he will only get better.”