Active sitting occurs when seating allows or encourages the seated occupant to be active even whilst seated. Also referred to as dynamic sitting, the concept is that flexibility and movement while sitting can be beneficial to the human body and make some seated tasks easier to perform. One of the earliest forms of active sitting is the common rocking chair which allows forward and backward swaying motion.

The concept of active sitting is gaining recognition, particularly among people whose work involves prolonged sitting. In the field of pediatric and adult rehabilitation, active or dynamic sitting is of growing interest to individuals who use wheelchairs and adaptive seating, such as children and adults with cerebral palsy and spinal cord injury.