A mobility device with sit and stand assist for providing disabled individuals with the ability to rise from a sitting position and move about without the aid of an assistant. The mobility device with sit and stand assist generally includes a motorized and steerable Drive Carriage Assembly, a Trailing Cart Assembly attached to the Drive Carriage Assembly, an Outrigger Assembly attached to the Trailing Cart Assembly, a Lift Arm Assembly attached to the Outrigger Assembly, a Lift Arm Locking Bolt Assembly attached to the Lift Arm Assembly, a Knee Brace Assembly attached to the Trailing Cart Assembly, a Control Assembly attached to the Lift Arm Assembly, and a User Connection Group comprised of various components designed to enable the user to comfortably connect himself/herself to the Device such that the user might be able to utilize and benefit from the Device.