Objective: To assess the effectiveness and safety of laparoscopic partial nephrectomy (LPN) in T1a and T1b renal tumors using "Trifecta" in partial nephrectomy and determine the predictive factors in respect to the criteria that constitute Trifecta. Materials and Methods: We retrospectively analyzed the data harvested from the patients who underwent LPN for T1a or T1b tumors. Preoperative, perioperative, and postoperative outcomes were evaluated and analyzed. Patients who had grade <2 Clavien complications, negative surgical margins, and minimal renal function deterioration (warm ischemia time [WIT] <= 25 minutes and <= 15% postoperative estimated glomerular filtration rate [eGFR] decrease) were acccepted to fit the strict Trifecta outcomes. Multivariate analysis was done using logistic regression test to determine the predictive factors affecting Trifecta. Results: A total of 128 patients underwent LPN. Of these, 65 (50.8%) patients had cT1a and 63 (49.2%) patients had cT1b renal tumors. The mean age was 55.8 (24-85) years. Mean operative time was 143.6 (100-200) minutes. A total of five (3.9%) patients had positive surgical margins. Mean WIT was 22.1 minutes. Ten patients (7.8%) had a >15% decrease in eGFR after surgery. Complications were observed in 11 (8.6%) patients. A total of 78 (60.9%) patients had strict trifecta outcomes. Tumor size was found to be a predictive factor affecting Trifecta at multivariate analysis. Conclusions: LPN procedure has been shown to demonstrate improved strict Trifecta outcomes in patients with T1a and T1b renal tumors. Only the tumor size was found to be a predictive factor regarding the Trifecta criteria.