Isaac Le Maire (c. 1558 in Tournai – September 20, 1624 in Egmond aan den Hoef) was a merchant for the Vereenigde Oostindische Compagnie and later for the Austraalse Compagnie. He is best known for his constant strife with the VOC, which ultimately led to the discovery of Cape Horn.
Isaac Le Maire was born in 1558 or 1559 in Tournai. He learned the trade from his merchant brother-in-law Jacques van de Walle. Isaac had four brothers, three of them were merchants. Already in 1584 he was registered in Antwerp as a wealthy grocer. At the time, he was also captain of the company of the Antwerp militia. He rented the house of Bourgognien Schilt, but in 1585 after the fall of Antwerp he fled to the northern Netherlands.
In 1585 he settled in Amsterdam. He was married in Antwerp to Maria Jacobsdr. Walraven and they had 22 children, and one of them, his son Jacob, would go down in history as an explorer. In 1641 his son Maximiliaen became the first VOC chief of Dejima in Japan.
Initially, Isaac Le Maire was the largest shareholder in the VOC.
In 1592 his name was registered for the first time in Amsterdam as a participant in the oldest marine insurance policy. In the following years he grew into the trade in European waters. Initially, he wasn't one of the wealthiest merchants, but he could make major investments by ensuring warrant positions within the direct and indirect family network. Together with Peter van de Pulle and Dirck van Os he constituted a company for trading in Russia. They carried Baltic grain and timber to Spain. Ships with leather, wax, fur and caviar from Archangelsk often were destined for Venice and Livorno. They also traded in bills of exchange, chartering and marine insurances. Between 1594 and 1598 he had a major position in the fish trade between British ports and Spain.