Belltrees Peel is a medieval tower situated on a peninsula in Castle Semple Loch in Renfrewshire, Scotland, on which was once an island.

The remains of the tower house are protected as a scheduled monument.

He was educated with James VI, an acted as Ambassador to France in 1601.

The Semples later used the Belltrees Peel as a shelter when sailing on Castle Semple Loch.

This article about a Scottish castle is a stub.