Conway, who since the election has played a prominent role at Trump's side as he prepares to enter the White House, will continue as a close advisor after he is sworn in next month, a transition team statement said.
"Kellyanne Conway has been a trusted advisor and strategist who played a crucial role in my victory," Trump said in the statement.
"She is a tireless and tenacious advocate of my agenda and has amazing insights on how to effectively communicate our message," he said.
Conway, 49, the first woman campaign manager of either major political party to win a presidential general election, said she was "humbled and honored."
"I want to thank the president-elect for this amazing opportunity," saidConway, who prior to her work with Trump was a political pollster and consultant specializing in targeting women voters.
She made a round of television interviews Thursday morning, elaborating on her White House role in the Trump administration.
Conway told MSNBC she saw herself as "a discreet adviser" on Trump's communications strategy, calling him a "brilliant communicator and connector."
"That's how he won this campaign, how he became president. If I can support that, I will."
