Barron Trump was met with huge cheers as he made his first political rally appearance on Tuesday alongside his father.

The 18-year-old joined his father and former US president Donald Trump for a rally in Doral, Florida.

As the 78-year-old addressed the large crowd of supporters at his golf course, he introduced Barron to the crowd.

The 45th president then joked the 18-year-old was more popular than his other sons, Donald Jnr and Eric.

“This is the first time he's ever done it. Where is Barron? Stand up. Look at him, you're pretty popular,” he said.

“He may be more popular than Don and Eric. We gotta talk about this. Hey, Don, we've gotta talk about this huh?”