The　nonlinear　transverse　vibrations　of　ordered　and　disordered　two-dimensional　(2D)　two-span　composite　laminated　plates　are　studied.　Based　on　the　von　Karman＇s　large　deformation　theory,　the　equations　of　motion　of　each-span　composite　laminated　plate　are　formulated　using　Hamilton＇s　principle,　and　the　partial　differential　equations　are　discretized　into　nonlinear　ordinary　ones　through　the　Galerkin＇s　method.　The　primary　resonance　and　1/3　sub-harmonic　resonance　are　investigated　by　using　the　method　of　multiple　scales.　The　amplitude-frequency　relations　of　the　steady-state　responses　and　their　stability　analyses　in　each　kind　of　resonance　are　carried　out.　The　effects　of　the　disorder　ratio　and　ply　angle　on　the　two　different　resonances　are　analyzed.　From　the　numerical　results,　it　can　be　concluded　that　disorder　in　the　length　of　the　two-span　2D　composite　laminated　plate　will　cause　the　nonlinear　vibration　localization　phenomenon,　and　with　the　increase　of　the　disorder　ratio,　the　vibration　localization　phenomenon　will　become　more　obvious.　Moreover,　the　amplitude-frequency　curves　for　both　primary　resonance　and　1/3　sub-harmonic　resonance　obtained　by　the　present　analytical　method　are　compared　with　those　by　the　numerical　integration,　and　satisfactory　precision　can　be　obtained　for　engineering　applications　and　the　results　certify　the　correctness　of　the　present　approximately　analytical　solutions.