Louisa Stuart | |
|---|---|
 Lady Louisa Stuart in 1851, at the age of ninety-three, sketch in oils by Sir George Hayter | |
| Born | 12 August 1757 |
| Died | 4 August 1851 (aged 93) |
| Parent(s) | John Stuart, 3rd Earl of Bute Mary Montagu |
Lady Louisa Stuart (12 August 1757 – 4 August 1851) was a British writer of the 18th and 19th centuries. Her long life spanned nearly ninety-four years.