Perimeter Building facade yellow sky reflected in a puddle

Contact PSI

We encourage all students interested in the program to read the FAQ section carefully for answers to your questions. If you do not find an answer to your question there, please contact us directly at [email protected].



31 Caroline Street North
Waterloo, Ontario
Canada N2L 2Y5

Perimeter Scholars International is located within the Perimeter Institute research facility.  The facility is situated in the Region of Waterloo, just west of the Toronto Pearson International Airport, in Ontario, Canada.  A PI Shuttle Van ride or other ground transportation brings most people from the airport to Perimeter. The Institute and nearby accommodations are located in Waterloo's city centre - known as the "Uptown" area - with beautiful park, two universities, wide range of shops, restaurants, cafes, theatres, and other amenities. 


For less than two hours: Please park in the first row of Perimeter’s main parking lot or in the City of Waterloo's Museum lot next door, accessible from Father David Bauer Drive. 

For more than two hours: Please park in Perimeter’s main parking lot in any row but the first. You will need to request a temporary parking permit from our security desk in front reception. Please have your licence plate number on hand.


Perimeter Institute observes statutory holidays and Christmas holiday periods. Dates include:

  • January 1 (every year) – New Year’s Day
  • February (third Monday every year) – Ontario Family Day
  • The Friday before Easter Sunday (every year) – Good Friday
  • May (Monday preceding May 25 every year) – Victoria Day
  • July 1 (every year) – Canada Day
  • August (first Monday in August every year) – Ontario Civic Holiday
  • September (first Monday in September every year) – Labour Day
  • October (second Monday in October every year) – Thanksgiving Day
  • December 25 (every year) – Christmas Day
  • December 26 (every year) – Boxing Day

Should you foresee any needs in advance of holiday periods, please contact Perimeter Institute well ahead of time.