South Wales Police PCs Jeremy Fowler, 39, and Mathew Davies, 37, have been summonsed for sexual assault and assault respectively.
Both men, who work in Merthyr Tydfil and Rhondda Cynon Taff, have been suspended and will appear at Swansea Magistrates' Court in June.
The allegations relate to incidents said to have happened two years ago.
Two policemen will appear in court over sexual assault and assault allegations relating to another officer.