Background: Pneumonia is one of the leading infectious disease-related causes of death and a leading cause of severe sepsis and septic shock. However, pneumonia is sometimes difficult to diagnose in the emergency environment due to the lack of distinct clinical, biochemical, and imaging indications. Our study's objective was to compare the diagnostic usefulness of LUS and CXR for the early diagnosis of clinically suspicious cases of pneumonia in ICUs with limited resources. Methods: This study was carried out on patients with clinical suspesion of pneumonia who were collected from those admitted at intensive care unit of Benha University Hospitals and intensive care unit of Sheikh Zayed Hospital during the period from February 2022 to July 2022. Results: We discovered that LUS was better than CXR for detecting pneumonia in patients. In addition, we discovered that LUS was more effective than CXR in diagnosing pneumonia in individuals with hemodynamic instability. CXR was more time-consuming than LUS regarding imaging duration. In light of the fact that early antibiotic delivery in pneumonia patients is linked with improved results, particularly in terms of morbidity and mortality, it is crucial to identify a less time-consuming diagnostic method. Conclusion: Lung ultrasonography performed better than chest X-ray for the early identification of pneumonia when performed at the bedside.