McDonald Peak, elevation 9,820 feet (2,993 m), is located in the U.S. state of Montana and is the highest peak in the Mission Mountains. McDonald Peak is situated within the Flathead Indian Reservation. The peak has the second greatest topographic prominence (after Crazy Peak) of all summits within Montana and is almost 80 miles (130 km) away from the next highest mountain in the state. McDonald Glacier is on the north slope of the peak.