New Castle Lachlan

{{Short description|Country house in Argyll and Bute, Scotland}}

{{Use dmy dates|date=April 2022}}

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| image = "new" Castle Lachlan (front).jpg

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| image_caption = New Castle Lachlan

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| location = Cowal Peninsula, Argyll and Bute, Scotland, United Kingdom

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| location_city = Strathlachlan

| location_country = Scotland

| coordinates = {{coord|56.111|-5.194|display=inline,title}} {{gbmapping|NS 01298 95558}}

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New Castle Lachlan, is an 18th-century baronial mansion or country house located at Strathlachlan, Cowal peninsula, Argyll and Bute, Scotland.{{Canmore|num=144944|desc=Castle Lachlan|access-date=17 January 2019}} It was built in 1790 by Donald Maclachlan, 19th laird, to replace the 15th century Old Castle Lachlan, which stands nearby on the shores of Loch Fyne. The building is protected as a category C listed building.{{Historic Environment Scotland|num=LB18295 |desc=NEW CASTLE LACHLAN, STRATHLACHLAN ESTATE |cat=C|access-date=17 January 2019|fewer-links=yes}}

The building was remodelled around 1910 by the architect George Mackie Watson.{{cite web|author=David Goold |url=http://www.scottisharchitects.org.uk/architect_full.php?id=201790 |title=Basic Biographical Details: George Mackie Watson|website=Scottisharchitects.org.uk |accessdate=10 February 2017}}