Irish Rail received complaints of racism, verbal sexual harassment, assaults and drug-taking on trains last year.
There was a 60 per cent increase in anti-social behaviour complaints in 2022, compared to the previous year.
Irish Rail received 444 antisocial behaviour complaints last year - up from 277 the previous year. Those relating to the Dublin to Belfast and Dublin to Cork lines have been released under the Freedom of Information Act.
Many are linked to drunk and disorderly behaviour. A woman and her husband on the Belfast line said a group of seven or eight drunken youths shouted sectarian, sexual and racial slurs on their journey.
A passenger on the Cork train claims a person took out a white substance and snorted it right off the table. A couple claims they were subjected to verbal abuse and threats of violence from a group of sports fans.
Another passenger claims they were verbally sexually harassed by two drunk men. One person say they witnessed a woman screaming in a man's face, threatening to kill him.
One passenger says they were kicked in the head by a man as they sat on the floor between two carriages. Irish Rail says it has been working with the gardai, private security staff and employees to address anti-social behaviour.
It says it's a societal issue that it's not immune to.