The team announced the move on Friday.
"We are very pleased to get Eric re-signed," Tampa Bay general manager Steve Yzerman said in a statement. "He was an important part of our team after being acquired and he played a key role in the playoffs both on and off the ice."
Brewer played 22 games with Tampa Bay after being obtained from St. Louis in February, helping the Lightning reach the Eastern Conference finals.
The Lightning also re-signed center Blair Jones to a one-year, two-way contract. He played in 18 games with the Lightning last season, recording a goal and three points.