"We need a leader like Marco to inspire a new Republican party and unite our nation," said Wahlberg, former member of "New Kids on the Block," in a statement distributed by the Rubio campaign.
Wahlberg made his opinion known on Twitter during CNN's Republican town hall a few days prior, saying Rubio was "the only candidate that can, and will, beat" Donald Trump."
An endorsement from Wahlberg, a Boston native, may come in handy as part of Rubio's efforts to hang tough on "Super Tuesday," a packed day on the primary calendar where many states, including Massachusetts, will cast their votes.
Trump, meanwhile, has often touted his friendship with New England Patriots' quarterback Tom Brady.