The Union of Students in Ireland fears that thousands of Irish university students could be affected by Brexit.
The USI has said Irish students studying in the UK could face a hike in fees and graduates encounter issues with working visas.
Speaking to RTÉ News, USI President Kevin Donoghue said: "It will have a negative impact on our students that are looking to go over and study in the UK and obviously some of our graduates as well who would be looking to go over and work there.
"At the moment you are part of a situation that whereby you go to study in the UK you fall under the EU fees models so you wouldn't be expected to pay more than students who are from there and studying there.
"That no longer applies in a non-EU space. You could be expected to pay significantly more than that. It'll have that affect the other way around as well."
Over 1m people sign UK petition calling for new EU referendum
More than one million people have signed an online petition calling for a new EU referendum.
The milestone was reached just over 24 hours after the official confirmation Britain had voted to leave the EU.
The petition states: "We the undersigned call upon HM Government to implement a rule that if the Remain or Leave vote is less than 60% based on a turnout less than 75%, there should be another referendum."
The clamour to add signatures to the UK government website-hosted petition comes amid dissatisfaction from voters who wanted the country to remain part of the union while anecdotes immediately began to emerge from those who said they regretted voting to leave.
The referendum saw 51.9% of votes cast to leave the EU, versus 48.1% for remaining part of the bloc, with a turnout of 72.2%, according to the Electoral Commission.
It resulted in David Cameron announcing his resignation as Prime Minister while the pound slumped to its weakest level for three decades.