The 30-year-old German will race alongside Paul Di Resta, recreating the successful partnership that raced together during the 2011 season.
The 2013 campaign will be Adrian’s fifth racing season in the colours of Sahara Force India and his sixth year of Formula One competition.
Adrian will test for the team this week in Barcelona, driving on Friday and Saturday. Paul Di Resta will be back in the car on Sunday.
"I’m delighted to be back in Formula One, especially with a team I know so well," said Sutil.
"I’m very happy and I want to thank Sahara Force India for giving me a second chance. Having been away from the sport, I’m even more determined to achieve my goals in Formula One. Things went really well at the Barcelona test last week and it almost feels as though I’ve never been away. Driving the car felt so natural and I was able to get back in the groove quickly and find the limit. Now my focus is on making the most of the final test session this week, working with the team in the simulator and getting myself in the best possible shape for Melbourne.”
Team principal Vijay Mallya admitted that making a decision had not been easy.
"The decision over our driver line-up has not been an easy one and we have given it great consideration over the last few months," he said.
"It was a close call, but ultimately we felt that Adrian’s experience and historic links to the team gave him the edge, and will provide us with the best possible chance of realising our ambitions for the coming season. If he can rediscover the exceptional form he showed in the second half of 2011, I’m confident that we can pick up where we left off at the end of 2012."
The Indian also wants to retain 2012 reserve driver Jules Bianchi.
"As for Jules Bianchi, he has impressed us enormously with his speed and work ethic, and I’m hopeful we can continue working with him this year to help him develop into a future Grand Prix driver."