Experienced midfielder Larsson, 32, has agreed a one-year deal and will train with his new team-mates for the first time today.
A Swedish international with 90 caps to his name, Larsson arrives at the KCOM Stadium having spent the last six years with Sunderland. Larsson, who will wear the number 16 shirt, has also played for Arsenal and Birmingham City in a career that has seen him amass more than 500 appearances in English football.
Speaking to Tigers TV after signing, Larsson said: “I’m delighted to be here and I am really looking forward to this fresh challenge.
“I had some options to consider, but I felt this was the best move for me to make and I can’t wait to get started now.”