Google Maps has begun displaying "Lake America" in place of Lake Ontario for users in the United States, after President Donald Trump ordered the body of water renamed.

Google said the change began rolling out Saturday after the U.S. Geographic Names Information System (GNIS) formally updated the lake's name from Lake Ontario to Lake America.

"Since we update Google Maps to reflect name changes in official government sources, which is GNIS for the U.S., people using Maps in the U.S. will see 'Lake America,' those in Canada will continue to see 'Lake Ontario,' and those outside of the U.S. and Canada will see both names," Google said.

"These updates follow our long-standing policy for bodies of water with names that vary from country to country, and are starting to roll out now," the company added.

The split display is significant because Lake Ontario is one of the five Great Lakes and is shared between the United States and Canada, bordering New York State and the Canadian province of Ontario, from which its name derives. Canada maintains its own geographic names authority, so Ottawa is not obligated to adopt the U.S. change, meaning the lake could carry different official names on each side of the border indefinitely.

White House communications director Steven Cheung highlighted the change in a post on X on Sunday.

"It's official! LAKE AMERICA on Google Maps," Cheung wrote.

The update comes days after Trump signed an executive order on Thursday directing the Interior Department to rename Lake Ontario to Lake America in the United States.

"The Lake will continue to play a pivotal role in shaping America's future and the global economy," Trump wrote.

"In recognition of this flourishing economic resource and its critical importance to our Nation's economy and its people, I am directing that the Lake officially be renamed as Lake America."

The move is not the first time a Trump-directed renaming has rippled through Google Maps. The company previously updated its maps to display the "Gulf of America" after Trump ordered the Gulf of Mexico renamed early in his second term, applying the same policy of showing different names depending on the user's location.

The president's decision also comes amid escalating trade tensions between Washington and Ottawa. U.S. tariffs of 50% on about $20 billion worth of Canadian goods took effect Aug. 22 after trade talks collapsed. Canada retaliated with tariffs on roughly $20 billion in U.S. imports that are set to take effect Sept. 8, according to Reuters. How Canada responds to the renaming within its own mapping and official systems remains to be seen.

Google could not immediately be reached by FOX Business for comment. Reuters contributed to this report.