Abstract: Field studies were carried out in 2011 and 2013 planting seasons at the Teaching and Research Farm of Federal University of Technology, Owerri Imo State to evaluate the effect of burnt and unburnt agro-wastes on soil properties, growth and yield of cocoyam (Colocasia esculenta) in a Typic-Haplustult. Treatments consisted of saw dust, rice mill waste, cocoa pod waste each applied at 10 t ha1 and saw dust ash, rice mill waste ash and cocoa pod ash each applied at 5 t ha1 and control. The treatments were laid out in a randomized complete block design and replicated four times. Data collected from soil analyses and growth performances of cocoyam were subjected to analysis of variance, while, significant means among treatments were separated using least significant difference at 5% probability level. Results obtained showed that plots amended with 10 t ha1 cocoa pod waste significantly (p<0.05) reduced soil bulk density from 1.55-1.37 g cm-3 in 2011 and 1.49-1.36 g cm-3 in 2013, while, plots amended with 10 t ha1 rice mill waste increased soil moisture content from 128.6-158.7 g kg1 in 2011 and 113.3-150.8 g kg1 in 2013. Plots amended with 10 t ha1 cocoa pod waste significantly (p<0.05) increased soil organic carbon from 9.2-17.6 g kg1 in 2011 and 7.15-16.73 g kg1 in 2013, total nitrogen from 1.21-5.38 g kg1 in 2011 and 1.38-4.88 g kg1 in 2013, available P from 15.70-29.75 mg kg1 in 2011 and 13.22-28.43 mg kg1 in 2013. Plots amended with 10 t ha1 cocoa pod increased the growth parameters of cocoyam more than other treatments with the highest cocoyam yield of 4.33 and 8.94 t ha1 obtained in 2011 and 2013, respectively. About 10 t ha1 cocoa pod waste was recommended for improvement of soil fertility, growth and yield of cocoyam in acidic soils of Owerri, Southeastern Nigeria.