| Viscountcy of Devonport | |
| Creation Date: | 22 Jun 1917 |
| First Holder: | Hudson Ewbanke Kearley, 1st Viscount Devonport |
| Present Holder: | Terence Kearley, 3rd Viscount Devonport |
| Heir Apparent: | the Hon. Chester Dagley Hugh Kearley |
| Status: | Extant |
Viscount Devonport, of Wittington in the County of Buckingham, is a title in the Peerage of the United Kingdom. It was created on 22 June 1917 for the Liberal politician and former Member of Parliament for Devonport, Hudson Kearley, 1st Baron Devonport. He had already been created a Baronet, of Wittington in the Parish of Medmenham in the County of Buckingham on 22 July 1908, and Baron Devonport, of Wittington in the County of Buckingham, on 15 July 1910. the titles are held by his grandson, the third Viscount, who succeeded his father in 1973.
The family seat is Ray Demesne, near Kirkwhelpington, Northumberland.
The heir presumptive is the present holder's first cousin once removed, David Hudson Kearley Mezquida (b. 1982)