In recent years, global rice consumption has seen a substantial increase and consumption is expected to continue to rise given its significance in household diets worldwide. The processing, however, requires specific operations to be successful. This study, therefore, investigated the effectiveness of technologies by Japan International Cooperation Agency (JICA) technologies utilized by rice processors in Kogi State, Nigeria. The study recruited 180 processors following three (3) stage sampling procedure. Primary data was collected with a validated and reliable interview schedule. Descriptive and t-test statistics were employed to analyze data. Results revealed that 91.1% of the processors were females with average age of 47.6 years while 56.7% had primary education. It was also found that 72.2% of the processors sourced for information about JICA technologies through agricultural extension agents. Study also found that all JICA technologies were effective. However, quality parboiling of paddy rice with the false bottom (  = 3.99) and soaking method ( =3.98) and whole grains realized when milled by Ajifa (  = 3.98) were the leading JICA technologies considered effective by the respondents. The study therefore suggests the implementation of educational programme suitable for adults in order to improve processors' literacy level and knowledge of rice processing business.