Titans coach Neil Henry said he was happy to have Lawton remain at the club.
"It's great to be able to re-sign a local product who loves it here on the Gold Coast," Henry said. "He has proved himself to be a good utility, playing a number of positions since debuting.
"He has put in a lot of hard work and has been part of the system here at the Titans for a long time. He has had a tough run with injury but we're glad that he has committed to the club for the next three years."
