Pirate havens or Pirate coves are ports or harbors that are a safe place for pirates to repair their vessels, resupply, recruit, spend their plunder, avoid capture, and/or lie in wait for merchant ships to pass by. The areas have governments that are unable or unwilling to enforce maritime laws. This creates favorable conditions for piracy. Pirate havens were places where pirates could find shelter, protection, support, and trade.

These havens were often near maritime shipping lanes. Although some havens were merely hidden coves, some were established by governments who employed privateers to disrupt the overseas trade of rival nations. Some of the most famous island strongholds included Tortuga in the Caribbean, Madagascar in the Indian Ocean, and the Sulu Archipelago in the Sulu Sea.

Some historic pirate havens included Barataria Bay, Port Royal, and Tortuga. These provided some autonomy for privateers and buccaneers.

Pirate havens had significant impacts on the history and development of maritime trade and warfare. Some of these impacts include:

Pirate havens enabled pirates to launch frequent and effective attacks on merchant ships that carried valuable goods across the oceans. This caused losses and damages to traders and shippers who had to pay higher insurance premiums or avoid certain routes or regions altogether. One of the major effects of pirates disrupted trade and commerce by attacking and capturing merchant vessels of all nations. They interfered with the flow of goods and people across the Atlantic, connecting Europe, Africa, and the Americas. Pirates targeted valuable cargoes such as sugar, tobacco, spices, textiles, slaves, and gold. They also seized ships and equipment maritime navigation and communication.

Pirate havens influenced the relations and conflicts among various colonial powers, who competed for control over trade and territory in different parts of the world. Some pirate havens served as allies or enemies to certain nations, depending on their interests or alliances. Some pirate havens also challenged the authority and legitimacy of established governments by asserting their own sovereignty or autonomy.

Dealers who had set up their business in various locations in the Caribbean and the Indian Ocean purchased goods from pirates. They paid a lower price for these goods than they would have paid to merchant ships in any other port, and the pirates accepted their money, even if they sold at a lower price than the value. The dealers then transported their goods to ports where they sold them through the same channels that they would have followed if the trade process had not been interrupted by the pirates. This created competition and influenced the market prices of many products.

Some colonial officials cooperated with pirates and offered them better prices for their loot than they could get in a safe port. One of the most well-known of these officials was Charles Eden, the governor of North Carolina, who granted pardons to famous pirates like Edward Teach (also known as Blackbeard) and Stede Bonnet. He even let Teach set up a pirate base at Ocracoke Island. This cooperation weakened the authority and legitimacy of colonial governments and increased piracy.