| Official Name: | Auchendinny |
| Gaelic Name: | Achadh an t-Sionnaich |
| Country: | Scotland |
| Os Grid Reference: | NT253621 |
| Map Type: | Scotland |
| Coordinates: | 55.847°N -3.192°W |
| Post Town: | PENICUIK |
| Postcode Area: | EH |
| Postcode District: | EH26 |
| Dial Code: | 01968 |
| Constituency Scottish Parliament: | Midlothian South, Tweeddale and Lauderdale |
Auchendinny (gd|Achadh an t-Sionnaich, meaning field of the fox) is a small village in Glencorse near Penicuik, Midlothian, Scotland. The village had a paper mill at Dalmore, until its closure in 2005. This was Midlothian's last remaining papermill and after demolition is now the site of new home development.[1] Nearby Auchendinny House was the last country house designed by gentleman architect Sir William Bruce.[2]
Penicuik was the heart of the Scottish paper industry,[3] and the nearby mill (the Brunt Mill) at Auchendinny was established in 1716. The mill was destroyed by fire in the 1840s.[4] It became a laundry in 1856, serving Queen Victoria during her residence at Holyroodhouse, and operated as such until the 1960s.[5]
Auchendinny House was remodelled by Robert Lorimer in 1900.[6]