The current research aims to: 1) measure the intellectual capital (IC) among agricultural extension experts in the Arab world using the Intellectual Capital Assessment Tool (ICAT), 2) measure individual performance of respondents, 3) measure knowledge management (KM) among respondents using the Knowledge Management Assessment Tool (KMAT), and 4) determine the impact of IC on the individual performance of respondents, and 5) determine the impact of IC on KM among agricultural extension experts in the Arab world. Data were collected through an electronic questionnaire form from 90 experts representing 7 Arab countries, which are Jordan, Saudi Arabia, Sudan, Iraq, Yemen, Syria, and Egypt, during January 2021. According to results of the study, the mean value of respondent' perceptions for IC, individual performance, and KM are 73.37%, 71.7%, and 63.7% of the total scores, respectively. There is a significant correlation relationship at the probability level 0.01 between the scores expressing all dimensions of IC and all dimensions of the individual performance and KM. The results also indicate that both organizational and social capitals explain about 43.1% and 34.7% of the variance of respondents' individual performance, also, both organizational and human capitals explain about 68.2% of the total variance in total KM, so that study could reject about 18 of the thirty  statistical hypotheses. Finally, some conclusions and recommendation are provided.