The unemployment rate fell slightly between September October, from 6.1% down to 6%, new figures from the Central Statistics Office show.
This compares with a rate of 7.2% in October 2016.
Of the 131,300 jobless people last month, 6.7% were men and 5.1% were women.
The last time unemployment was this low was in June 2008.
The rate had been has high as 15.2% in January 2012.
The youth unemployment rate (people aged 15-24 year) was 14% in October, a decrease from 14.7% in September.
Commenting on the figures, EMEA economist at global job site Indeed Mariano Mamertino said: "Although great progress has been made, two black marks are the continuing stubbornly high rates of youth and long-term unemployment.
"Although the rate of youth unemployment was down to 14% in October, from 16.7% a year ago, young people in Ireland are still almost three times more likely than older people to be unemployed today, with 27,000 people under the age of 25 who want a job not yet finding a role."
He added: "The second black mark is that nearly half of those who are unemployed are long-term unemployed, and therefore have been looking for a role for at least 12 months.
"It is unlikely that the sectors facing the most significant skills shortages such as technology, finance and biopharmaceuticals will be hiring from these two cohorts, and are more likely to look overseas for hires who have experience and are ready to hit the ground running."
