The former Australian Test batsman has signed for Derbyshire a day after ending his first-class career.
The 34-year-old will cover for Shivnarine Chanderpaul who will be playing for the West Indies in Tests against New Zealand and Bangladesh.
The left-hander has played 21 Tests, two one-day internationals and one Twenty20 for Australia. He scored five Test centuries including a 117 on his debut against South Africa.
North comes back to Derbyshire after previously playing for them in 2006, making 465 at an average of 93 in a three-match stint.
North is hoping he can help get the team back to Division One.
I've enjoyed arguably one of my best seasons in Australia, so the opportunity to play this specific role for Derbyshire was very exciting and has come at the perfect time in my career.
They obviously have a talented group of players so hopefully I can assist in getting the boys back up to Division One quick smart.