Natural Fibers reinforced composite are in huge demand as they offer best alternatives for the existing plastic due to its light-weight, easy availability, high strength and biodegradability. The current work evaluates the mechanical of Sansevieria Trifasciata fibers (STF). Fibers are treated with NaOH solution. Scanning Electron Microscopy analysis is used to examine fiber properties. Optimization of independent operating parameters namely fiber loading (wt%): (5–25), NaOH concentration (mg/L): (5–15) and curing time of composite (hours): (24–72) was performed using Box-Behnken Design (BBD) in response surface methodology (RSM). It was found that maximum tensile strength was 16.903 MPa at 15 wt% Sansevieria Trifasciata Fiber loading, treated with 10(w/v) for 72 h is predicted as the optimized condition for maximum tensile strength.