The denial came after the New York Post reported on Monday that Infantino had repeatedly tried and failed to reach Trump by phone since his proposal was abandoned on Friday and that he felt isolated amid mounting criticism.
"The FIFA President has not made any call to the US President, or any members of his administration, in recent days. It is pure fiction," FIFA said in a statement to Reuters.
It came after FIFA executive and coaching legend Arsene Wenger said it had been "absolutely necessary" to drop the sell-off proposal.
The backlash has intensified over Infantino's failed plan to spin off the world soccer governing body's commercial assets into a new entity backed by private investors.
FIFA's proposal to unlock up to $US4.2 billion ($A6.0 billion) from private investors by selling a roughly 20 per cent stake in an entity overseeing competitions including the World Cup collapsed after strong resistance from stakeholders.
With the plan shelved, attention has turned to the potential repercussions for Infantino, whose prospects of securing another term as FIFA president from 2027 to 2031 have come under increased scrutiny.
Trump and Infantino have forged a close relationship, appearing together at major soccer events including this year's World Cup co-hosted by the United States, Mexico and Canada.
Infantino presented Trump with the widely-pilloried inaugural FIFA Peace Prize in December 2025.
The relationship attracted further attention because Thrive Capital -- founded by Joshua Kushner, the brother of Trump's son-in-law Jared Kushner -- had been expected to play a leading role in the proposed commercial rights venture.
The New York Post also reported Infantino had scheduled private talks with US secretary of state Marco Rubio. However, US assistant secretary of state for global public affairs Dylan Johnson said in a post on X on Monday there were no plans for Rubio to speak with the 56-year-old FIFA president.
Infantino has taken to Instagram to amplify messages of support from member federations including Sri Lanka, Kuwait, Qatar and Morocco.
Meanwhile Wenger, the former long-time Arsenal manager who's now FIFA's chief of global football development, distanced himself from the sell-off plan.
Wenger spoke out after a letter from UEFA's lawyers to Infantino threatening legal action named the French coaching great among 18 executives whose data and communications should be retained as potential evidence.
"I was not involved in this strategic plan and first became aware of the project through media reports," Wenger, who was hired by Infantino in 2019, said in a statement.
"The decision to withdraw the project was absolutely necessary and beyond question, because I firmly believe in an independent FIFA that serves our game with commitment, transparency, and integrity."
