Sir John McTaggart, 1st Baronet

Sir John McTaggart, 1st Baronet (15 March 1789 – 13 August 1867) was a Scottish Whig MP in the United Kingdom parliament. He was created a baronet in 1841. The title became extinct upon his death.

He represented Wigtown Burghs 1835–1857.

McTaggart was the eldest son of John McTaggart of Ardwell (died 1810), whose estate he inherited. He married, in 1811, Susannah Kymer, eldest daughter of John Kymer, of Streatham, Surrey. They had three children: They left an only daughter born Marianne Susanna Ommanney (d. 23 April 1914) who married in 1866 Mark John Stewart , who was created a baronet in 1892 and took the additional surname of MacTaggart in 1905. Sarah McTaggart, who married in 1853 James Church, of Calcutta. His sister, Susan McTaggart, married Thomas Flower Ellis. And their grandson, the philosopher John McTaggart Ellis McTaggart was (twice) named after Sir John McTaggart.