"We are glad that Ted has decided to return to the 49ers in 2012," 49ers general manager Trent Baalke said in a statement. "He is a versatile player and an excellent teammate that will continue to play an important role for us on both offense and special teams."
A former Miami Dolphins first-round draft pick from Ohio State, Ginn, 26, caught 19 passes last season, scoring on both punt and kickoff returns.
He ranked second in the league in punt return yardage with a 13.3 average.
Ginn has caught 159 career passes for 2,047 yards and six touchdowns.
Three years ago, he returned kickoffs for 101 and 100 yards for touchdowns against the New York Jets to tie an NFL record.
For more coverage of the NFL, go to profootball.scout.com.
Follow me on Twitter: @RavensInsider
Ted Ginn rejoins 49ers on one-year deal
Scout NFL Network Top Stories
Damon "Snacks" Harrison Highlights 2016Defensive tackle Damon Harrison was one of the New York Giants' best players, leading the defense to a top five season.
The Giants Beat12:38 PM
Broncos On The Brink: Andy JanovichChad Jensen is spotlighting young Broncos on the brink. But are they players on the brink of stardom or obscurity? Today, we focus on fullback Andy Janovich.
Mile High Huddle11:28 AM
Player capsule: Trevor KnightThe Arizona Cardinals didn't draft a quarterback this April, but they did sign Texas A&M product Trevor Knight immediately following the conclusion of the NFL Draft.
Player capsule: Zac DysertThe Arizona Cardinals were intrigued by quarterback Zac Dysert's potential at the end of last season, but will that be enough to keep him with the franchise for a second straight…