The Boston Port Act, also called the Trade Act 1774, was an Act of the Parliament of Great Britain which became law on March 31, 1774, and took effect on June 1, 1774. It was one of five measures that were enacted during the spring of 1774 to punish Boston for the December 16, 1773, Boston Tea Party.

The Intolerable Acts, sometimes referred to as the Insufferable Acts or Coercive Acts, were a series of five punitive laws passed by the British Parliament in 1774 after the Boston Tea Party. The laws aimed to punish Massachusetts colonists for their defiance in the Tea Party protest of the Tea Act, a tax measure enacted by Parliament in May 1773. In Great Britain, these laws were referred to as the Coercive Acts. They were a key development leading to the outbreak of the American Revolutionary War in April 1775.