Ben Aslak is a Graham of 609 m in Highland. All four of its nearest neighbours are higher, up to Beinn Sgritheall at 974 m.
It sits below Sgurr na Coinnich, only 3.3 km to the north and 130.1 m higher. Only nine of the 737 hills profiled in Scotland are lower. It shares its height of 609 m with Mynydd Troed and High Seat. It is the lowest of the five register hills in the South-East Skye and Scalpay region, where Sgurr na Coinnich is highest. On the Grahams height ladder it sits between Ladylea Hill (609.1 m) and Cruach Neuran (607.3 m). It is 256.7 m below the average height of the 427 register hills in Highland.