Right-back Dunne joined the Lions as an eight-year-old and has made more than 250 appearances for the club, being named player of the year last season.
The 28-year-old has now committed himself to The Den until 2014 and admitted he does not want to be anywhere else.
"I am absolutely delighted to have agreed a new deal here, this is my club," he said.
Source: PA
Source: PA