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The aim of this study was to investigate efficacy and safety of early supplemental administration of inhaled tobramycin for prevention and treatment of hospital-acquired pneumonia (HAP) in patients with severe multiple trauma. Methods. Fifty four patients with severe multiple trauma were divided into 2 groups: the study group (n = 27) who took inhaled tobramycin added to systemic antibiotics and the control group (n = 27) who took standard systemic antibacterial treatment. Baselines characteristics did not differ between the groups. The patients' status was assessed daily using APACHE II and CPIS scales. Results. Frequency of HP in the study group was as twice as rare compared to the controls with correspondent reduction in days in ICU. The groups did not differ in mechanical ventilation parameters and frequency of sepsis. CPIS and APACHE II scores did not increase in the inhaled tobramycin group whereas CPIS total score increased and APACHE II score did not improve in the control group. To the 5 th day, significant between-group difference was found in CPIS (p = 0.0028) and APACHE-II (р = 0.0004). Conclusion. Early administration of inhaled tobramycin 600 mg daily added to the standard systemic antibacterial therapy is safe and effective in prevention and treatment of HAP in patients with severe multiple trauma. Such therapy decreased frequency of pulmonary infectious complications and significantly reduced duration of treatment in ICU.