Age is associated with experience in many things. The paper examined the effect of age on corporate culture and organizational effectiveness in the Nigerian banking industry. A total of 388 managers were randomly drawn from a population of 13,339 managers of all the 24 banks in Nigeria. The instruments used for data collection were questionnaire and oral interview. A total of 320 copies of the questionnaire were retrieved and analyzed. Spearman’s Rank Correlation Statistical tool was used to test the hypotheses. The findings revealed that age is significantly related to corporate culture and organizational effectiveness. Based on the findings we concluded that age have significant effect on corporate culture and organizational effectiveness. The study therefore recommends that Managers should cultivate adaptive culture that enables organizations to overcome the problems associated with different stages of organizational development.