A plurality of stackable folding chairs having two sets of legs pivotally attached to each other and a seat pivotally attached thereto. Indentations are formed in a first side of one of the two sets of legs and a protrusion is formed on a second side of the legs at approximately the same location. The chairs are configured to be folded so as to be substantially planar in configuration with the indentations and the protrusions exposed. The protrusions of a first chair can then be positioned within the indentations of a second chair so that the first and second chairs are positioned adjacent each other in a stacked configuration. The indentations preferably have an outer region that has a greater cross sectional area than the protrusions thereby facilitating positioning of the protrusion within the indentations and a second inner region having a cross sectional area that is configured so that the protrusion is flushly positioned within the inner region to thereby substantially prevent relative movement between the first and second chairs when the first and second chairs are in the stacked configuration.