Cronk ny Arrey Laa is a hill in the south west of the Isle of Man.

It may be confused with a hill of a similar name in the parish of Jurby, further north along the west coast of the island.

At 437 m (1,434 ft) it is the second highest hill in this part of the island, after the South Barrule, 2 miles (3 km) to the east.

Its name means Hill of the Day Watch due to it having been used as a look out post for invaders during the time of the Viking invasions.

"[2] However, the summit is only about 500 metres from the main road between Port Erin/Port St Mary and Peel, and may be climbed as part of an easy day walk between those places.