Bentley, who took charge of the Shrimps in 2011, is thrilled to have pledged his future to the club.
"I have been at Morecambe for more than 10 years and it is a place that is close to my heart," he said.
"I have enjoyed my last two years in management and I feel we are progressing both on and off the pitch.
"Kenny and myself are working really hard and no-one could be more determined to make this a success than the pair of us. Between us we are working hard on doing the right things in relation to players, developing a training ground and developing a youth system.
"It doesn't just happen overnight at a club like ours so we have to go about things the right way and everyone at this club is determined to see us develop even further over the next few years.
"We are already seeing the positive changes and the rewards of everyone's hard work and we are determined to make sure that continues over the next few years."
- Sports & Recreation