Nicolaes Coeckebacker or Couckebacker was twice Chief of the Dutch trading factory at Hirado, the Japanese trading post of the Dutch East India Company. He arrived in 1633 and stayed till fall 1635. His second stay as VOC Opperhoofd in Hirado was from 1637 till 1639.
Having been ordered by the Matsudaira clan to assist him in destroying the Christian rebels, led by Amakusa Shirō at Shimabara, Coeckebacker bombarded the insurgents during a fortnight in their stronghold in Hara Castle from his ship De Rijp, starting the 24th of February 1638. On March 12th, Matsudaira Nobutsuna informed him to withdraw and thanked him for his help. Coeckebacker's participation in the assault, part of the Battle of Shimabara was, according to his own reports, both reluctant and ineffective.
In 1640, he was attempting unsuccessfully to negotiate a trade agreement with the Trịnh Lords of Vietnam. Nicolaes Couckebacker wrote a Report Concerning His Trip to Tonkin and His Inspection Tour of the Company's Comptoir in Tayouan on the Island Formosa. After his return to Holland, Coeckebacker married, and became schepen in his hometown Delft.
- "Diaries kept by the head of the Dutch Factory in Japan". University of Tokyo, Historiographical Institute. Retrieved 2009-07-03.