Sir John Brocket (c. 1540 – 2 October 1598) of Brocket Hall in Hertfordshire was an English politician. He was High Sheriff of Essex and Member of Parliament for Hertfordshire.
The 1578 edition of Calvin's Lectures or Daily Sermons upon the Prophet Jonas, translated into English by Nathaniel Baxter contained a long dedication to him.
Family
Sir John married twice: firstly Helen, the daughter of Sir Robert Lytton of Knebworth, with whom he had 5 daughters and secondly Elizabeth, the daughter and coheiress of Roger Moore, and widow of Gabriel Fowler, with whom he had another daughter.