The men, part of the Jordanian squad, are based at a training centre in Antrim ahead of the Paralympic Games in London next week.
Faisal Hammash, 35, a trainer with the squad, was charged late on Tuesday with two counts of causing a child to engage in sexual activity.
Two wheelchair-bound power-lifters were also charged. Omar Qaradhi, 31, was charged with three counts of sexual assault and one of voyeurism, of which at least two were against children, said the BBC.
Motaz Al-Junad, 45, also a power-lifter, faces one charge of sexual assault. The offences took place between August 16 and 20.
A decision on whether the men will be able to take part in the Paralympic Games, which start on August 29, is now in the hands of the relevant Paralympic committees, the BBC said.
-AAP