River Shira

{{Short description|River in Argyll and Bute, Scotland}}

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

{{Use British English|date=March 2025}}

{{Infobox river

| name = River Shira

| name_native = {{Native name|gd|Abhainn Siara}}

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| image = Image:Abhainn Sira.JPG

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| image_caption = The River Shira, just north of Eilean an Eagail

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| source1_location = Close to, Lochan Sron Mor

| source1_coordinates= {{coord|56|19|57|n|04|57|47|w|region:GB_type:river_source}}

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| mouth_location = Loch Dubh

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River Shira ({{langx|gd|Siara / Abhainn Siara}}) is the river that runs for about 7 miles through Glen Shira, in Argyll and Bute, west of Scotland. Originating to the north-east at {{convert|350|m|ft}} altitude, near the start of the River Fyne.

The river runs into the Lochan Shira reservoir, feeding the 5 MW {{lang|gd|Sron Mor}} (Big Nose), Shira Hydro-Electric Scheme, at {{convert|340|m|ft}} altitude and dropping {{convert|49|m|ft}}.{{cite web|url=http://www.scottish-southern.co.uk/sseinternet/assets/569CABFE-1165-4ED8-9419-CF3B5A64BC98.pdf |title=Power from the Glens |publisher=Scottish and Southern Energy |access-date=2008-08-01 |pages=23 |url-status=dead |archive-url= https://web.archive.org/web/20071018233304/http://www.scottish-southern.co.uk/sseinternet/assets/569CABFE-1165-4ED8-9419-CF3B5A64BC98.pdf |archive-date=2007-10-18 }}{{cite web |title=SLOY AWE HYDRO ELECTRIC SCHEME, SRON MOR POWER STATION (LB51690) |url=http://portal.historicenvironment.scot/designation/LB51690 |website=portal.historicenvironment.scot |archive-url= https://web.archive.org/web/20200213131012/http://portal.historicenvironment.scot/designation/LB51690 |archive-date=13 February 2020 |date=11 February 2011 |url-status=live}} The river includes a few waterfalls and islands, including {{lang|gd|Eilean an Eagail}} (The Island of Fear).

The River Shira flows into Loch Dubh (Black Lake), where the Ancient Clan MacNaghten castle and crannogs used to be situated, then passes Stuart Liddell's house. Loch Dubh drains through the short (River Garron), then flows under the Garron Bridge into Loch Fyne, a sea loch.{{lang|gd|Gearr Abhainn}}{{cite web |title=Gearr Abhainn Inveraray |url=https://www.google.co.uk/maps/place/Gearr+Abhainn/@56.2483618,-5.0511178,1399m/data=!3m1!1e3!4m5!3m4!1s0x48890db9ed104375:0xa731ababce465cf7!8m2!3d56.2468294!4d-5.0444015!5m1!1e4 |website=Google Maps |publisher=Google, Inc. |access-date=1 January 2023}}{{Cite web|url=https://canmore.org.uk/site/23633/inveraray-castle-estate-garron-bridge|title=Inveraray Castle Estate, Garron Bridge | Canmore|website=canmore.org.uk}}http://clanmacnaughton.net/docs_articles/RECORDS_OF_ARGYLL_PART_FOUR-3rev.pdf

The river lends its name to the ferry {{MV|Loch Shira}}.{{Cite web|url=https://www.calmac.co.uk/fleet/mv-loch-shira|title=MV Loch Shira|website=CalMac Ferries}}