The charges come after investigations into two separate incidents by the civilian-led Independent Investigations Office.
The Criminal Justice Branch says one alleged incident occurred last June at the Nanaimo RCMP detachment and resulted in Const. Tim Bedard facing one charge of assault causing bodily harm.
In the second case, three Mounties faces charges of assault with a weapon after the alleged use of pepper spray in police cells at the Parksville detachment in June 2013.
Constables Scott Jones and Mick White, along with Cpl. Michelle Lebrun, are scheduled to appear in court in Nanaimo on March 17.
The Independent Investigations Office investigates cases in which people are seriously injured or killed by police officers.