The 10th season began in November (19).
Announcing the news at the Winter Television Critics Association press tour, Gary Levine, the president of entertainment at Showtime Networks, said, "Airing this summer, it will be one last hurrah for the Gallaghers and their unique blend of love and lechery."
The series is based on the British drama of the same name, which also ran for 11 seasons.
"The characters of 'Shameless' have brought Showtime viewers more laughs and tears and pure enjoyment than any programme in our history," added Levine. "While we are sad to bid the Gallaghers farewell, we couldn't be more confident in the ability of showrunner John Wells, his writing team and this great cast to bring our series to its appropriately 'Shameless' conclusion."