Almost 14,000 victims contacted the Dublin Rape Crisis Centre last year.
Of those who suffered childhood sexual abuse, 14% said the perpetrator was their parent.
This afternoon, Health Minister Simon Harris will launch the Dublin Rape Crisis Centre’s 2018 annual report.
The organisation runs the National 24-Hour Freephone Helpline, and last year it received nearly 13,400 calls – up 4% on the previous year.
Face-to-face therapy appointments were up 7% with appointments given to 582 victims.
About three out of every four people who contacted the centre last year were female.
About 20% said they were raped or sexually assaulted by their partner.