Business activity in Dublin's private sector continued to expand between July and September, but only marginally.
The latest PMI survey from S&P Global shows that the headline rate stood at 50.8, down from 52.2 in the previous quarter.
This is the weakest rate of growth since late 2022.
However, the index remains above the 50 point threshold that signals expansion.
The report shows that activity across the rest of Ireland also slowed, but growth remained slightly stronger than in the capital at 51.4.
In Dublin, the manufacturing and construction sectors both recorded increases in output, while the services sector, the biggest sector in the capital dipped to 49.4.
This means the services sector is now in contraction territory for the first time since early 2021.
The rest of Ireland also showed a mixed picture with growth maintained in the manufacturing and services sectors, while construction contracted.
When it comes to employment, staffing levels in Dublin increased more rapidly than in the rest of the country.
"The Dublin private sector went through a soft-patch during the third quarter of the year, particularly in the service sector where business activity actually dipped slightly from the picture in Q2," said Andrew Harker, Economics Director at S&P Global Market Intelligence.
"More positively, however, new orders returned to growth and greater certainty around US tariff policies will hopefully enable companies to build going into the final quarter of the year.
"In fact, firms were confident enough to up their pace of hiring, with additional workers taken on at a solid clip in the third quarter," he added.
