Strachur and Stralachlan are united parishes in the west side of Cowal, Argyll, Scotland. Strachur is the postal station, and the parish is traversed by the shortest line of communication between Inveraray and Glasgow, via the St.Catherine's ferry on Loch Fyne.

It is an area of outstanding natural beauty bordering the Loch Lomond and the Trossachs National Park. The parish is bounded along its north-west side by Loch Fyne - Strachur forming its north-western district, and Straclachan its south-western one; and it is bounded on other sides by the parishes of Lochgoilhead, Kilmun, Dunoon, and Kilmadan. Its length north-westward, or parallel to Loch Fyne, is 18 miles, and its breadth varies from three to eight miles. It is mostly uplands, and altitudes rise to 3000 feet.

Loch Eck touches the parish for three miles on the south-east.

The parish church of Strachur dates from 1789 and can accommodate 400. That of Stralachlan was built in 1792 and can hold 150. The parishes were united in 1650.

By tradition, Strachur has been held as one of the original strongholds of Clan Campbell, and in 1870 the principal landowners of the parish were Campbell of Strachur and McLachlan of that Ilk. The principle country houses there at that time were Strachur Park, Castle Lachlan, Strachurmore, Glenshellis, Balliemore, and Glenbranter.

Probably the most famous “son of Strachur” was John Campbell of Strachur, although Sir Harry Lauder was the laird of the Glenbranter estate, between Lock Eck and Strachur, in the first half of the twentieth century. Much of the Glenbranter estate was subsequently acquired by the Forestry Commission, who encourage public access to the land. During the 1930s, the Ministry of Labour opened a work camp on the estate for young unemployed men. Known as Instructional Centres, the camp regime sought to 'harden' the unemployed, many of whom came from industrial West of Scotland and had previously worked in mining or other industries hit by depression, and prepare them for work elsewhere. The Glenbranter camp hit the headlines in 1935 when the trainees organised public walk-outs, and again in 1936 when there was a mass meeting to protest against conditions.