This research aims to practice strategic leadership and its role in improving institutional performance by applying it to telecommunications companies in the Kingdom of Saudi Arabia. This is done by achieving a set of the following sub-objectives: identifying the nature of strategic leadership as well as identifying its various dimensions represented in (strategic direction, investing competencies and capabilities, rational use of powers, organizational culture, ethical practices), and the impact of all these dimensions on improving institutional performance. In order to achieve this, a questionnaire is prepared to serve the purposes of the research to find out the opinions of the respondents about the impact of the various dimensions of strategic leadership on improving institutional performance. The descriptive analytical method was used .The study concluded that there is a statistically significant effect of the impact of strategic culture in improving institutional performance. The results also indicate that there is a statistically significant significant effect of the dimensions of strategic leadership practices represented in (strategic direction, investment of competencies and capabilities, rational use of powers, organizational culture, ethical practices) on improving institutional performance.