Cummertrees is a coastal village and civil parish of Annandale in Dumfries and Galloway. It lies about a mile inland, on the Pow Water, twelve miles from Dumfries, and three from Annan.
Cummertrees, recorded as Cumbertres in 1204 and 1207, is probably of Cumbric origin. The second element represents *tres 'strife, tumult, violence', cognate with Welsh tres and Gaelic treas. The first element is *cümber, cömber 'confluence.Andrew Breeze proposes the meaning 'confluence of turbulent water'. Alan James suggests that *tres may have been a stream-name.
However, James notes that the first element may represent *cömbröɣ, which occurs in the name Cumbria.
Cummertrees is rural, primarily residential village; the parish includes Powfoot and Trailtrow and is bounded by St Mungo and Hoddam, Annan, the Solway Firth, and Ruthwell and Dalton. A Public hall was erected at Cummertrees in 1893. The river Annan is at the northern boundary. It has a wide area of level sand swept by the Solway 'bore' which can move at around ten miles an hour and can often be heard throughout the parish. The seaboard is low and sandy and features in Walter Scott's novel Redgauntlet. The ground rises a little inland, to 350 feet on Repentance Hill.
The local geology is mainly Devonian, with old limestone workings at Kelhead and some sandstone quarries.