"Object permanence," also known as "object concept" in the field of visual impairment, is one of the most important early developmental milestones. The achievement of object permanence is associated with the onset of representational thought and language. Object permanence is important to orientation, including the recognition of landmarks. Independent mobility (such as crawling) improves visual attentiveness, which is critical to the achievement of later object permanence tasks. Direct instruction can accelerate the mastery of object permanence in children with disabilities and is more effective than general stimulation programs. This article presents an action research study on teaching object permanence to a child with multiple disabilities and visual impairment. It illustrates some of the principles of assessment and instruction described in Bruce and Vargas (2012). The Institutional Review Board at Boston College approved this study, which was part of a set of action research studies on pivotal milestones that were conducted with children with multiple disabilities. (Contains 2 figures.)