"Jimmy Fallon was required to have minor surgery after injuring his hand at his Manhattan apartment this morning," the rep said in a statement.
"He is expected to make a full recovery," his rep said.
The taping of the show on Friday was canceled following the incident.
"Hey guys - unfortunately tonight's taping has been canceled due to Jimmy injuring his hand. He's totally fine but we'll be airing a repeat."
The TV host later took to Twitter to show his bandaged hand.