Theodoor Hendrik Nikolaas de Booy (December 5, 1882 – February 18, 1919) was a Dutch-born American archaeologist.

At the age of 23, he migrated to the United States where he married Elizabeth Hamilton Smith on March 29, 1909.They had two children.

During their archaeological fieldwork in the caves and middens they made remarkable discoveries (e.g. a paddle or pottery) from the Pre-Columbian culture of the Lucayan.

[1] His fieldwork in the Caribbean and in Venezuela made him a prolific expert for the history of the Pre-Columbian Arawak culture.

[2][3] Alexander Wetmore named the extinct Antillean cave rail (Nesotrochis debooyi) after de Booy.