Dickey Mountain is a summit in Thornton, New Hampshire, in the White Mountains, rising 2,734 feet above sea level. Its exposed top gives it a more open character than many forested peaks in the region. It is commonly reached by the Welch-Dickey Trail, a 4.4-mile loop that also crosses neighboring Welch Mountain. Dickey Mountain is also botanically distinctive as one of only five places in New Hampshire where jack pine grows.