Woody biomass is being employed as energy resource in some countries of the world; coincidentally, huge amount of sawdust is generated annually in southwestern Nigeria. This study assessed the comparative suitability of sawdust of different wood species for utilization as energy resource by determining their calorific values. Results showed that the calorific values of the sawdust samples with about 15% moisture content ranged between 11.29 and 26.10 MJ/kg with Irvingia grandifolia and Nauclea diderrichii giving the least and maximum, respectively. Up to 13 of the identified wood species have calorific values between 20 and 26 MJ/kg that are comparable to that of coal and may be adopted as energy resources.