Globalisation, capital market crash and the Enron'scase led the accounting profession to insist on the need for a single set of high quality reporting standards. International Financial Reporting Standards (IFRS) were first adopted in 2005 by EU countries while Nigeria agreed to adopt in 2012. The question is: How does IFRS adoption improve the value relevance of accounting information? Several studies have explored the value relevance of IFRS adoption;however, they are based on foreign countries while Nigerian researches do not contain empirical evidence as they are mostly theoretical. This study therefore seeks to investigate the impact of IFRS adoption on value relevance of financial information of listed Deposit Money Banks (DMBs) in Nigeria.. The study used correlation research design anddata on Earnings per Share (EPS), Change in Earnings per Share (CEPS), Book Value per Share (BVPS)and share price (SP) were sourced from published annual reports of listed banks and cashcraft asset management. Moreover, Edwards Bells and Olhson (1995) model was adopted to conduct a pre (2006-2009) and post (2010-2013) IFRS analyses on seven (7) listed banks. Using the Generalized Least Square (GLS) the study documented that: Pre- IFRS financial information is value relevant; post IFRS financial information has very weak value relevance and post IFRS financial information has no relative value relevance over pre- IFRS financial information. The study therefore, recommends a need for strong enforcement effort, rigorous IFRS training and good corporate governance.