Canadian Foreign Minister Chrystia Freeland issued the threat in a statement about Boeing's complaint against Bombardier.
"Canada is reviewing current military procurement that relates to Boeing," Freeland said.
Boeing argued at a hearing in Washington on Thursday that duties should be imposed on Bombardier's new larger C Series passenger aircraft, insisting it receives Canadian government subsidies that give it an advantage internationally.
Freeland said Boeing's petition is "clearly aimed at blocking Bombardier's new aircraft, the C Series aircraft, from entering the U.S. market." She said the government strongly disagrees with the Commerce Department's decision to initiate anti-dumping and countervailing duty investigations.
The threat comes amid increasing trade disputes between Canada and the U.S. and on the same day the Trump administration formally told Congress that it intends to renegotiate the North American Free Trade Agreement.
Chicago-based Boeing has petitioned the U.S. Commerce Department and the U.S. International Trade Commission to investigate subsidies of Montreal-based Bombardier's C Series aircraft. Boeing said Bombardier has received more than $3 billion in government subsidies so far that have allowed Bombardier to engage in "predatory pricing."
The Quebec government invested $1 billion in exchange for a 49.5 percent stake in the C Series last year. Canada's federal government also recently provided a $275 million loan to Bombardier, which struggled to win orders for its new medium-size plane. But Bombardier was awarded a 75-plane order for the C Series from U.S.-based Delta Air Lines in 2016. Bombardier said its planes never competed with Boeing in the sale to Delta.
The Canadian government said late last year it would enter into discussions with the U.S. and Boeing on buying 18 Super Hornet jet fighters from Boeing on an interim basis and hold an open competition to buy more planes over the next five years.
Canada remains part of Lockheed Martin's F-35 Joint Strike Fighter program.