Organisation agility is crucial for success in today’s fast–paced and rapidly changing business environment. Hence, this study investigate the influence of knowledge sharing on organizational agility of administrative officers in tertiary institutions in Ekiti State, Nigeria Descriptive research design was adopted. Population consists of 589 administrative officers from all tertiary institutions in Ekiti State, Nigeria. The sample size of the population is two hundred and thirty - four (234) administrative officers which was gotten with the use of Krejcie and Morgan Sampling Technique. The reliability coefficient ranges from 0.711. Data collected were analyzed using inferential statistics. Findings revealed that knowledge sharing was found to significantly influenced organizational agility (Adj R2 = 0.967). Thestudy concluded that knowledge sharing singly had significant influence on organizational agility. The study recommended that since knowledge sharing positively influence organizational agility, management of tertiary institutions in Ekiti State, Nigeria should adopt official policies on knowledge sharing that align with organizational agility goals.