It lies on the northern side of the Boknafjorden at the southern end of the Karmsundet strait.

Vestre Bokn lies between the islands of Karmøy (to the west) and Austre Bokn and Ognøya (to the northeast).

[1] Vestre Bokn is connected to the mainland via a series of bridges on the European route E39 highway which connect to Austre Bokn, then to Ognøya, and then to the mainland.

There is a regular ferry route from the island across the Boknafjorden to the island of Rennesøy, which in turn is connected to the city of Stavanger by a series of roads, bridges, and tunnels.

[1] The Rogfast tunnel, which is currently under construction, will connect this island to the mainland Stavanger Peninsula to the south.