This　paper　is　focused　on　the　internal　resonances　and　nonlinear　vibrations　of　an　eccentric　rotating　composite　laminated　circular　cylindrical　shell　subjected　to　the　lateral　excitation　and　the　parametric　excitation.　Based　on　Love　thin　shear　deformation　theory,　the　nonlinear　partial　differential　equations　of　motion　for　the　eccentric　rotating　composite　laminated　circular　cylindrical　shell　are　established　by　Hamilton’s　principle,　which　are　derived　into　a　set　of　coupled　nonlinear　ordinary　differential　equations　by　the　Galerkin　discretization.　The　excitation　conditions　of　the　internal　resonance　is　found　through　the　Campbell　diagram,　and　the　effects　of　eccentricity　ratio　and　geometric　papameters　on　the　internal　resonance　of　the　eccentric　rotating　system　are　studied.　Then,　the　method　of　multiple　scales　is　employed　to　obtain　the　four-dimensional　nonlinear　averaged　equations　in　the　case　of　1:2　internal　resonance　and　principal　parametric　resonance-1/2　subharmonic　resonance.　Finally,　we　study　the　nonlinear　vibrations　of　the　eccentric　rotating　composite　laminated　circular　cylindrical　shell　systems.　Copyright　©　2019　ASME.