The 30-year-old left the professional game a month after her Wimbledon triumph in 2013.
Bartoli has since worked as a commentator and started a new career in fashion, launching a jewelry collection and a shoe line.
The Frenchwoman, who struggled with injuries throughout her 14-year career, raised the question of a possible comeback on her Twitter page.
“Coming back or not coming back to tennis? What do you think? Should I?” Bartoli said.
The tweet immediately triggered speculation in French and English-language news media of a possible comeback.
L’Equipe, an influential French sports newspaper, said a return would be hard for Bartoli given her admission that excessive physical stress was one of the main reasons for retiring – but added her age should not be an obstacle.
“Marion Bartoli has just turned 30. It’s not too late to go back to winning. Serena Williams, the boss of the circuit, continues to rule the WTA roost at 33,” said the paper.