Introduction: One day point prevalence study to evaluate patient profile in ICUs was planned by Turkish Thoracic Society Respiratory Failure and Intensive Care Group. Methods: The study was cross-sectional and data were obtained by a questionnaire in participating ICUs on October 26th 2016 for 24 hours. A questionnaire evaluating characteristics of patients in ICU was prepared. A total of 78 units declared to participate in the survey. Results: Ten centers were excluded from the study because they couldn’t participate on study day. A total of 922 patients were enrolled from 68 units. The mean age was 64.8 ± 17.9 (17-99), 58.6% were male. The mean APACHE II, QSOFA and GCS scores on the study day were 18.5 ± 8.8, 1.4 ±1.4 and 10.2 ± 4.3, respectively, and mean length of stay (LOS) was 20 ± 70 days. The patients were admited from emergency room(44%[n=407]), clinics(39%[n=359]) and other ICUs(17%[n=156]).38.5% of patients had Type 1 respiratory failure(RF),35.6% had Type 2 RF. Comorbidity was seen in 80.6% and malignancy rate was 18.8%. On the study day it was found that 52.1% of the patients underwent invasive mechanical ventilation(IMV),12.3% of the patients had non-invasive ventilation(NIV) 29.1% of them had oxygen therapy. Tracheostomy was performed in 19.7% of patients. 70% of the patients had enteral, 20.7% had parenteral nutrition. The discharge rate was 7% while mortality was 1.1% on that day. Discussion: Most of the patients in ICUs are respiratory failure cases admited from emergency department and clinics. Advanced age, presence of comorbidities and cancer are thought to prolong LOS in ICU. For effective use of ICU beds further regulations for patient admission criteria is necessary.