Mount Earnslaw/ Pikirakatahi is a 2,819-metre mountain in the South Island of New Zealand. It is named after Earnslaw village in the parish of Eccles, Berwickshire, hometown of the surveyor John Turnbull Thomson's father. Mount Earnslaw is within Mount Aspiring National Park at the southern end of the Forbes Range of the Southern Alps. It is located 25 kilometres north of the settlement of Glenorchy, which lies at the northern end of Lake Wakatipu.