Waste Services Incorporated, commonly known as WSI, was a company founded in 2001 that provided waste services in Canada and the United States.

The WSI brand is a company dealing with solid waste collection in Canada.

On June 30, 2010 the company agreed to merge into BFI Canada.

Three weeks later, the company began rebranding as BFI Canada, and the company was dissolved in Canada three months later.

In the U.S., however, the company was rebranded as Progressive Waste Solutions because the BFI Canada brand name is still in use in the U.S. following its 2000 acquisition by Progressive Waste Solutions.