Opal Peak is a 2,840-metre mountain summit in Jasper National Park, Alberta, within the Canadian Rockies. It rises in the Opal Hills northeast of the northern end of Maligne Lake, west of Opal Lake and northwest of Leah Peak. The mountain sits in a subarctic climate zone marked by cold, snowy winters and mild summers, with temperatures that can drop below -20 °C and wind chill that can drive conditions below -30 °C. Water running off Opal Peak drains west into the Maligne River, part of the Athabasca River watershed.