The highly-rated Belgian is keen to emulate the former Red Devils forward by embracing a regime of increased physical training to become stronger on the ball
Since making his United debut against Sunderland as an 18-year old earlier in the season, the Belgian is now regarded as one of the brightest prospects in world football and sees the Real Madrid superstar as the example to follow.
Januzaj cites the Portuguese's commitment to physical training in the gym as a particular lesson as he attempts to become stronger on the ball.
"I watch [Ronaldo] a lot and try to do the same things that he does," the youngster told Inside United. "He is a very good player.
"I always look at him and watch his games as well and try do what he is doing and remember what he did at Manchester United.
"I have to work hard in the gym like he did because, when he came here, he wasn't strong but, after a year or so, he became really strong and could push people away. I'm getting a bit stronger now due to the gym work."