Google Maps users in the United States will now see the name “Lake America” instead of “Lake Ontario,” the company said on Saturday, two days after President Donald Trump signed an executive order renaming the body of water amid an ongoing trade war with Canada.

In a blog post published on Saturday, Google announced the upcoming name change, noting it pulls the names for geographical features from official government sources—in this case, the U.S. Geographic Names Information System (GNIS).

The display name “Lake America” can now be seen by users in the United States, but Google Maps users in Canada will still see “Lake Ontario,” while users outside both countries will be shown both names.

Trump made the name change in an executive order signed on Thursday, which instructed the Secretary of the Interior to implement the change within the next 30 days.

Interior Secretary Doug Burgum signed an order the same day instructing the Board on Geographic Names to update the GNIS with the new name, insisting the lake is “an integral asset to America, as a critical artery for America’s early trade and commerce, and as a vital economic resource for America.”

“The name [Lake Ontario] is more than 400 years old, predating both the Confederation of Canada and the Declaration of Independence of the United States of America,” Canadian Prime Minister Mark Carney said in a post on social media shortly after Trump’s renaming. “Canadians also know that naming reality means calling it Lake Ontario – then, now and always,” he said. Ontario Premier Doug Ford responded by erecting a 24-by-12-foot bilingual sign in Grimsby, Ontario on Saturday with the Canadian name for the lake. “Long before President Trump, this lake was called Lake Ontario,” Ford said in an announcement video , adding “long after President Trump is gone, it will still be called Lake Ontario.

Google has previously changed names on Google Maps to reflect Trump’s other efforts to rename geographical features. It now labels the tallest mountain in North America as “Mount McKinley” instead of Denali, its frequently used Alaskan native name. Former President Barack Obama officially renamed the mountain “Denali” in 2015, but Trump signed an executive order changing it back to “Mount McKinley” on his first day in office for his second term in January 2025. The surrounding national park is still officially referred to as “Denali National Park” by the National Park Service. Trump signed another executive order renaming the Gulf of Mexico as the “Gulf of America” the same day, and Google made a similar change that same month. Now, users in the U.S. see “Gulf of America,” while users in Mexico see “Gulf of Mexico” and users outside both countries see both names. Google said this was compliant with what the tech company said was its “longstanding practice of applying name changes when they have been updated in official government sources.”

Trump renamed Lake Ontario days after Canadian negotiators walked away from trade negotiations with the U.S. after Canadian Prime Minister Mark Carney deemed the U.S.’s demands “unfair.” As a result, U.S. tariffs targeting an estimated $28 billion in Canadian goods went into effect, prompting Canada to announce their own 50% retaliatory tariffs against U.S. steel, dairy, electronics and other goods last week.