Sir John Frederick (25 October 1601 – March 1685) was an English merchant, MP and Lord Mayor of London.
Frederick was a city of London merchant and a member of the Worshipful Company of Barber-Surgeons.
He translated to the Worshipful Company of Grocers on 3 October 1661 and was elected the same year as 326th Lord Mayor of London.
[1] Frederick became president of Christ's Hospital in 1662 and held the post until his death.
[1] In 1663 he was elected MP for City of London in the Cavalier Parliament and sat until 1679.