Beinn Tarsuinn is a mountain on the Isle of Arran, Scotland.^[1] It is the southernmost of the four Corbetts on the island, lying between Glen Rosa to the east and Glen Iorsa to the west.

Beinn Tarsuinn
From Goat Fell to the east
Highest point
Elevation	826 m (2,710 ft)
Prominence	235 m (771 ft)
Parent peak	Caisteal Abhail
Listing	Corbett, Marilyn
Naming
English translation	transverse hill
Language of name	Gaelic
Geography
Location	Isle of Arran, Scotland
OS grid	NR959412
Topo map	OS Landranger 69

Beinn Tarsuinn is often climbed in conjunction with the neighbouring peak of Cìr Mhòr, to which it is linked by a rocky ridge forming the subsidiary top of A' Chìr. The crossing of A' Chìr involves scrambling, however the two peaks can be linked without crossing A' Chìr by means of a path that traverse the ridge's western side. The simplest and shortest route up Beinn Tarsuinn is via one of the two ridges on either side of the Coire a' Bhradain; both ridges drop down into Glen Rosa, the usual access for most walkers to this group of hills.