NACLO 2024 at the University of Washington

Guggenheim Hall


The North American Computational Linguistics Open (NACLO) competition

NACLO organizes contests across the US and Canada in which middle school and high school students solve linguistics puzzles. No prior knowledge of linguistics or languages is necessary to solve the problems - just logic skills.

Professionals in linguistics and natural language technologies create engaging problems for the NACLO competitions using languages from around the world.   The competition attracts top students, many of whom choose later on to study and work in the field.


Competition Dates

  • Open Round: The Open Round competition is on Thursday, January 25, 2024, 9:00 am — 12:00 pm. Seattle and Puget Sound area students will compete at the University of Washington Seattle Campus in the Husky Union Building (HUB), Room 332.
  • Invitational Round: The top ten percent of Open Round performers nationwide will be invited to participate. The Invitational Round competition will take place on Thursday, March 14, 2024, 9:00 am – 1:00 pm in Guggenheim Hall Room 415L on the University of Washington Seattle Campus.
  •  International Olympiad: Eight students will be selected to represent the United States at the 21st International Linguistics Olympiad to be held in Brasilia, Brazil in July 2024.



The NACLO registration page is at:  On the registration form choose “University of Washington (Seattle, WA)” as the ‘site’.  In the Seattle and Puget Sound area, NACLO is organized by the Department of Linguistics at the University of Washington. The local organizers are Jim Hoard (, Karoliina Kuisma (, and Luke Zettlemoyer (


NACLO 2024 is sponsored by the National Science Foundation, The Linguistics Society of America, The North American Chapter of the Association for Computational Linguistics, Carnegie Mellon University, and Yale University.