The 35-year-old England international made 648 appearances for the Blues, scoring a club record 211 goals, but manager Jose Mourinho has chosen not to offer the midfielder a new contract.
Thank you for the memories and keep making history!
“When I arrived at this fantastic club 13 years ago I would never have believed that I would be fortunate enough to play so many games and enjoy sharing in so much success. This club has become part of my life,” Lampard said in a statement.
“Roman Abramovich, the man who saved our club and took us all to new levels. His desire to push the club to the top of the football world has rubbed off on everyone.
“All the managers and coaches who have helped me develop my game during the time I have been here. I have learnt from every one of them.
“The club will move forward and as a Chelsea man I have no doubt that with the quality of the players that are there, they will continue with the success that we have all enjoyed over the past seasons.
“Thank you for the memories and keep making history!”
Lampard, who is currently with the England squad in Miami ahead of the World Cup, said that not consider any of the offers until after the tournament in Brazil finishes.