| John Brewis | |
| Office1: | Lord Lieutenant of Wigtown |
| Term Start1: | 1981 |
| Term End1: | 1989 |
| Predecessor1: | John Dalrymple, 13th Earl of Stair |
| Successor1: | Edward Stuart Orr-Ewing |
| Office2: | Member of Parliament for Galloway |
| Term Start2: | 8 October 1959 |
| Term End2: | 20 September 1974 |
| Predecessor2: | John Mackie |
| Successor2: | George Thompson |
| Birth Name: | Henry John Brewis |
| Birth Date: | 8 April 1920 |
| Party: | Unionist Conservative |
Henry John Brewis (8 April 1920 – 25 May 1989) was a Scottish Unionist Party politician and barrister.
Brewis was born on 8 April 1920. He was the only son and youngest child of Dorothy Katharine (Walker) Brewis and Francis Bertie Brewis, a Lieutenant-Colonel in the King's Own Yorkshire Light Infantry.
His paternal grandparents were Frances Caroline (Williams-Wynn) Brewis and Samuel Richard Brewis of Ibstone House, Tetsworth, and was High Sheriff of Buckinghamshire. His maternal grandparents were Edwyn Walker and Elizabeth (Bethell) Walker.
He was elected as the Member of Parliament (MP) for Galloway at a by-election in April 1959, after the death of the Unionist MP John Mackie. He was re-elected at the general election in October 1959, and held the seat until he stood down at the October 1974 general election. He was also a Member of the European Parliament from 1973 to 1975.
He was Deputy Lieutenant of Wigtown from 24 January 1966[1] and Lord Lieutenant from 18 September 1981 [2]
On 20 April 1949, he married Faith Agnes Devorguilla McTaggart-Stewart (1926–1998), a daughter of Sir Edward McTaggart-Stewart, 2nd Baronet of Southwick and Blairderry and a granddaughter of Gilbert Clifton-Hastings-Campbell, 3rd Baron Donington. Together, they were the parents of:
Brewis died on 25 May 1989.[3]