Sir John Lade, 1st Baronet (1662–1740) was an English brewer and politician who sat in the House of Commons between 1713 and 1727.
He built up a fortune from brewing and invested widely in overseas trading enterprises.
There was a powerful contingent of Whig brewers at Southwark, in particular Charles Cox, and Lade decided to challenge them.
Lade went to St. Paul's to hear Sacheverell deliver a controversial sermon for which he was later impeached.
The campaign at Southwark and the sermon antagonized the Whigs and stirred up Tory support which lead them to victory at the 1710 general election.
He was succeeded in the baronetcy according to remainder by his great nephew, John Whithorne, who took the name of Lade.