A line dancing scam that's allegedly swindled hundreds of thousands of dollars from victims has police searching for a south-east Queensland man and his father.

Key points: Police say the number of victims is growing every day

Police say the number of victims is growing every day The money was supposed to pay for the dancers to attend festivals overseas and in Australia

The money was supposed to pay for the dancers to attend festivals overseas and in Australia Police want to speak with Brett and Bruce Jenkins

It's alleged at least 100 victims paid money for line dancing holidays, including group trips overseas and domestic line dancing festivals, balls and cruises that never eventuated.

"The scam's been operating for the past six to 12 months," Senior Sergeant Ken Rogers said.

"We've got 100 victims at this point in time and that number is growing by the day."

Brett Jenkins, 37, and his father Bruce Jenkins, 66, are being urged by Queensland police to come forward.

Police want to speak to Bruce Jenkins and his son Brett Jenkins. ( Supplied: Queensland Police Service )

Investigators are also pleading for any further victims of the alleged scam to contact them.

Police said victims would transfer money to Brett Jenkins Line Dancing to either compete in or attend social line dancing events.

"The trip of a lifetime was never going to eventuate," Senior Sergeant Rogers said.

He said many victims lost hundreds of dollars, while others were allegedly swindled out of close to $10,000.

Most victims came from South-East Queensland, but others were from across the country including many from Western Australia.

"Most of these people are elderly and quite frankly some of the money that they've lost — these people simply don't have."

Police said the pair have been missing for several weeks, but were spotted last week in Brisbane's north.