Sir Mark John MacTaggart-Stewart, 1st Baronet (12 October 1834 – 26 September 1923), known as Mark John Stewart until 1880, was a Scottish Tory Member of Parliament in the British House of Commons. He represented Wigtown Burghs from 1874 to 1880 and again for a few months later in 1880 and also sat for Kirkcudbrightshire between 1885 and 1906 and briefly in 1910.
In 1880 he assumed the additional surname of MacTaggart. On 7 October 1892, he was made a Baronet, of Southwick in the Stewartry of Kirkcudbright and Blairderry in the County of Wigtown. MacTaggart-Stewart died in September 1923, aged 88. He was succeeded in the Baronetcy by his only surviving son, Sir Edward Orde MacTaggart-Stewart, 2nd Baronet.
| Parliament of the United Kingdom | ||
|---|---|---|
| Preceded by George Young |
Member of Parliament for Wigtown Burghs 1874—1880 |
Succeeded by John McLaren |
| Preceded by John McLaren |
Member of Parliament for Wigtown Burghs 1880—1880 |
Succeeded by Sir John Charles Dalrymple Hay |
| Preceded by John Maxwell Heron-Maxwell |
Member of Parliament for Kirkcudbrightshire 1885—1906 |
Succeeded by Gilbert McMicking |
| Preceded by Gilbert McMicking |
Member of Parliament for Kirkcudbrightshire Jan — Dec 1910 |
Succeeded by Gilbert McMicking |
| Baronetage of the United Kingdom | ||
| New creation | Baronet (of Southwick and Blairderry) 1892–1923 |
Succeeded by Edward Orde McTaggart-Stewart |