Very few studies have investigated the effects of temperature on the corrosion resistance of nitinol even though it is recognized that temperature may affect the corrosion behavior of metals by increasing their corrosion rate. Similarly, most corrosion studies of implant devices have investigated the corrosion resistance of nitinol at a physiological pH of 7 without further study of the effect of other pH values. However, the literature reports that physiological pH can range from 1 to 9 depending on the type of body fluids. Therefore, the goals of this study are to assess the influence of temperature and pH on the corrosion resistance of nitinol. Electropolished NiTi and passivated 316L stainless steel wires were tested in Hank’s physiological solution at temperatures ranging from 10°C to 80°C and pH varying from 1 (gastric secretions) to 9 (Brunner’s gland secretions). The cyclic potentiodynamic tests performed in this study followed the ASTM standard F2129. Results show that nitinol’s ability to repassivate is significantly reduced by an increase in temperature. No other significant effects were observed by a change in temperature. Stainless steel corrosion rate, on the other hand, was significantly affected by an increase in temperature while the other parameters remained very stable. These results suggest that nitinol and stainless steel have different corrosion mechanisms (localized corrosion vs uniform corrosion processes respectively) affected by an increased in temperature. Studies investigating the effect of the pH are now in progress. The implication of these results will be discussed for in vivo implant behavior.