Suzanna van Baerle or Susanna Huygens (8 March 1599 – 10 May 1637) was a Dutch woman known for the book-long poem Dagh-werck that was written as a close collaboration with her husband, Constantijn Huygens.
(In one of the preserved manuscripts of Dagh-werck it appears Van Baerle wrote a substainal portion of the work).Van Baerle was born in Amsterdam as the daughter of the wealthy merchant Jan van Baerle (d.1605) and Jacomina Hoon (d.1617) whose early deaths left her a wealthy heiress at a young age.
She had many suitors, but she chose to marry Constantijn Huygens who fell in love with her in 1626.
Among her other suiters was Constantijn Huygens' brother Maurits for whom the Huygens family had originally attempted to win Van Baerle's hand in marriage.
Van Baerle and Huygens married on April 6, 1627 and had five children, Constantijn Huygens, Jr., Christiaan Huygens, Lodewijk Huygens, Philips Huygens (1633–1657) and Suzanna Huygens (1637–1725).
Susanna died on May 10, 1637 shortly after the birth of her youngest child from an unknown illness, possibly the result of complications related to the birth.
Constantijn Huygens lived for almost another 50 years, but did not remarry.