Wellstar Kennestone Regional Medical Center (formerly WellStar Kennestone Hospital) is a major tertiary-care hospital located in Marietta, Georgia, serving most of northern and central Cobb County, Georgia, as well as adjacent counties.

In 1959, the hospital's capacity increased to 300 beds with the opening of the south wing.

On June 22, 1988, the nation's first laparoscopic gall bladder removal took place at Kennestone.

[1] In 1993, Kennestone Hospital merged with five other facilities to become Northwest Georgia Health System.

[2] In 2020, Wellstar Kennestone Regional Medical Center opened a 200+ bed Emergency Department connected by a pedestrian bridge to the main hospital.