Adriaen van Trappen Banckert was a Dutch admiral. In English literature he is sometimes known as Banckers. His first name is often rendered in the modern spelling Adriaan. Van Trappen was the original family name, but the family was also and better known under the name of Banckert. In the 17th century Netherlands such a situation was solved by combining the two names.
He was born, probably in Vlissingen or Flushing, somewhere between 1615 and 1620 as the second and middle son of Rear-Admiral Joost van Trappen Banckert and Adriana Jansen. Both his brothers were navy captains, serving the Admiralty of Zealand also.
Adriaen started his career on the ship of his father, fighting the Dunkirkers. In 1639, at the Battle of the Downs, Adriaen was master on that ship. In 1642 he became a captain himself.
During the First Anglo-Dutch War Adriaen was flagcaptain of the Zealandic Vice-Admiral Johan Evertsen on the Hollandia. In the Battle of Portland in 1653 his elder brother Joost was killed; he himself was taken prisoner the same year when his ship foundered during the Battle of Scheveningen.