Sir John Brownlow, 3rd Baronet (26 June 1659 – 16 July 1697) of Belton House near Grantham in Lincolnshire, was an English member of parliament.
He was born on 26 June 1659, the eldest surviving son[1] and heir of Sir Richard Brownlow, 2nd Baronet of Humby, Lincolnshire, by his wife Elizabeth Freke, a daughter of John Freke of Stretton in Dorset.
In 1689 he was elected as a member of parliament for Grantham, a seat he held until his early death in 1697.
In 1676 he married Alice Sherard (died 1721), a daughter of Richard Sherard of Lopethorp in Lincolnshire, by whom he had four (or five) daughters but no sons: Sir John Brownlow committed suicide, aged only 38, in July 1697 after suffering from severe gout.
As he died with no surviving sons, he was succeeded in his title and in most of his estates, including Belton, by his younger brother Sir William Brownlow, 4th Baronet, who received Belton House on condition that John's widow Alice Sherard should retain possession of it during her lifetime.