ABSTRACT: This study examined the relationship between technological innovativeness and competitive advantage of Deposit Money Banks in Port Harcourt. The study adopted a cross-sectional survey in its investigation of the variables. Primary data was generated through self- administered questionnaire. The population of the study was 223 employees of twenty one (21) Deposit Money Banks in Port Harcourt. The sample size of 143 was determined using the Taro Yamane‟s formula for sample size determination. The reliability of the instrument was achieved by the use of the Cronbach Alpha coefficient with all the items scoring above 0.70. The hypotheses were tested using the Spearman Rank Order Correlation Coefficient. The tests were carried out at a 95% confidence interval and a 0.05 level of significance. The study findings revealed that there is a significant technological innovativeness and competitive advantage of Deposit Money Banks in Port Harcourt, Nigeria. The study recommends that Deposit money bank should encourage their Information Technology department by way of developing programs that will gear the IT personnel to innovate way on how to use technology such as apps and program (software) which will make banking much easier for customers.