Abstract: An adjustable tablet case for protecting tablet computers of different sizes is disclosed. The adjustable tablet case can include a foldable cover coupled to a tablet holding portion which has a central base portion. The adjustable table case can further include retention arms having retention regions. The retention arms resiliently can be coupled to the central base portion. The retention regions can be configured to retainingly receive an edge portion of a tablet computer. The retention portions and retention regions can be urged toward the central base portion by an urging mechanism and be capable of being at least partially extended away from the central base portion, thereby enabling the adjustable tablet case to receive and protect tablets of varying size.