The creep recovery and dynamic mechanical properties of acrylate urethane oligomer/acrylate networks were investigated. The retardation spectra L-CR obtained from the creep recovery experiments were significantly different from the corresponding retardation spectra L-DMA Obtained from the dynamic mechanical measurements. The reduced frequency omega* dependence of L-DMA and the relaxation spectra H-DMA in the higher omega* region were approximately represented as L-DMA (alpha)omega(*-p) and H-DMA (alpha)omega(*q) although L-CR decreased faster than L-DMA with an increase in omega*. The exponents q were close to 1/2 characterizing the Rouse modes in the systems containing an acrylate urethane oligomer of M-omega = 5000 but less than 1/2 in the system containing an acrylate urethane oligomer of M-omega = 12,000. For the latter systems, significant thermorheological complexity was observed.