Twitter users were quick to joke at the firework display which took place on Thursday night in the US capital.
Many users commented suggesting the fireworks had "hacked" by the Russians, a reference to the ongoing scandal involving allegations of Moscow interfering in the US election.
In his final night before Mr Trump became President, the firework display included three massive letters being blasted up into the sky.
The message was supposed to spell "USA" however it was almost immediately pointed out it looked closer to 'USR'.
Some joked the country had become the "United States of Russia" as Mr Trump prepares to take control.
Twitter users made links between Russia and America when the fireworks spelt "USR"
Not again… looks like Russia has now hacked the fireworks display at Trump's inauguration concert
The President-elect has openly admitted in his campaign he will attempt to improve relations between America and Russia.
Both President-elect Mr Trump and Russian President Vladimir Putin have denied and criticised any suggestion of impropriety.
A reporter published by BuzzFeed News suggested the Kremlin had compromising material of Mr Trump.
Twitter users were quick to react to the fireworks' amusing message.
Twitter users were shocked by the fireworks that spelt out "USR" instead of "USA"
Celebrities slamming Donald Trump
Fri, January 20, 2017
From Meryl Streep to George Clooney, here's what the celebrities have to say about President-elect Donald Trump.
1 of 13
Robert De Niro, Cher and Alec Baldwin slam Donald Trump at the We Stand United NYC Rally
One user said: "Not again…looks like Russia has now hacked the fireworks display at Trump's inauguration concert #USR"
"Actually full respect the fireworks guys. That's genius. #USR," another added.
A third said: "Trump unveils his plans for America. Welcome to the #USR #TrumpInaugural"
Another posted: "what's 'USR' in the fireworks? Did they forget the 2nd 'S'? USSR?"
"Break out the vodka. The fireworks just spelled out #USR instead of USA. Thank you Russia aka USSR. #trumpinauguration #LincolnMemorial," another quipped.