Katherine Lowther | |
|---|---|
| Born | 21 September 1653 |
| Died | 7 January 1713 (aged 59) |
| Nationality | Kingdom of England |
| Spouse | John Lowther, 1st Viscount Lonsdale |
| Children | 14 |
Katherine Lowther born Katherine Thynne became Katherine, Viscountess Lonsdale (21 September 1653 – 7 January 1713) was an English electoral patron. After her husband's death, she took over with his political influence in north-west England.