Gardai recorded 3,286 sexual offences in the year to June.
New figures from the Central Statistics Office show that is 9.2% more than the previous 12-month period.
820 rapes were reported in that time, 138 more than the year beforehand.
Meanwhile, Gardai were also made aware of 175 cases of child sexual abuse.
Only the South Eastern Garda Region noted a decline in the number of sexual offences, when the year to June 2019 is compared with the year to June 2018.
The Justice Minister Charlie Flanagan says the government remains committed to preventing and addressing sexual crime in all its forms.
Minister Flanagan added:
“The laws surrounding sexual offences have been significantly strengthened in recent years and An Garda Síochána is continuously improving its specialist services to respond to the needs of victims. Ten Divisional Protective Service Units have already been established and similar units are being rolled out nationwide, with specially trained officers responsible for engagement with and interviewing of victims. These Units will support the delivery of a consistent, professional and sensitive approach to the investigation of sexual crime.”
Separately, the CSO says more than 20,000 drug offences were recorded by Gardai in the year to June - a rise of 16.5%.
The number of burglaries and related offences decreased by almost 10% with over 16,600 recorded.