Almost 170 people were found to have been sleeping rough on the capital's streets one night this month in the latest stark reminder of the scale of the homeless crisis facing the city.
Homelessness organisation Simon Community warned the problem is "spiralling out of control" while Environment minister Alan Kelly said the figures are "not acceptable".
Dublin City Council recorded 168 people sleeping rough on the night of November 11. That's up 93pc from 87 counted on a night in the winter of 2012..
"The growing problem of homelessness in Dublin can not and must not be ignored any longer ... Our soup run and rough sleeper team, who are out 365 nights of the year, have seen a drastic increase in the numbers of people looking for our help," Sam McGuinness from Dublin Simon Community said.
"Shamefully, this is the highest figure ever recorded since the official count began in 2007," he said.
Mr Kelly restated the government's goal of ending involuntary long-term homelessness and rough sleeping by 2016.
"It is not acceptable that people should sleep on the streets of our cities and towns," he said.
"I am fully aware that homelessness is a complex issue and that rough sleeping is its most disturbing manifestation.
We will work with all stakeholders to ensure that housing is provided for those vulnerable households in our society," he said.