Sir John Stewart, 1st Baronet (c.1758 – 22 June 1825) was an Irish lawyer and politician.
He was a son of Church of Ireland clergyman, the Reverend Hugh Stewart, Rector of Termonmaguirk, County Tyrone and Sarah Hamilton, daughter of the Venerable Andrew Hamilton, who was Archdeacon of Raphoe for more than sixty years.
He was educated in Drogheda and at Trinity College Dublin, studied law at Lincoln's Inn, and was called to the Irish Bar in 1781.
He chose to sit for Bangor, and held that seat until the dissolution of the Parliament of Ireland when the Act of Union came into effect in 1801.
[1] Driving a two-horse carriage while suffering from long-term sickness, he was badly injured when his horses bolted and died four days later in June 1825.