Region of Waterloo International Airport or Kitchener/Waterloo Airport is an international airport serving the Regional Municipality of Waterloo in Woolwich, Ontario, Canada, west of Toronto. It has year round daily flights to Edmonton, Vancouver, Victoria, Winnipeg, Calgary, Orlando, Halifax, Fort Lauderdale and Kelowna through Flair Airlines and WestJet. It also has seasonal flights to Cancun through Sunwing Airlines and Flair Airlines. In 2022, the airport ranked seventh-busiest in Canada by total aircraft movements and twentieth-busiest by passenger traffic.

The Regional Municipality of Waterloo is a metropolitan area of Southern Ontario, Canada. It contains the cities of Cambridge, Kitchener and Waterloo, and the townships of North Dumfries, Wellesley, Wilmot and Woolwich. Kitchener, the largest city, is the seat of government.