A European Union report has concluded that many of the EU's 13 million Muslims face discrimination in employment, education and housing which remains severely undocumented.
And the report has called for stronger monitoring of the religious affiliations of victims of hate crime.
It quotes official figures from four years ago showing that Muslims in Ireland experienced almost three times the national rate of unemployment.
The report of the European Monitoring Centre on Racism and Xenophobia conservatively estimates that Muslims comprise 3.5% of the EU's population.
It says available data shows that they suffer multiple discrimination. In Britain, for example, they experience higher unemployment rates than people from any other religion.
It says when the University of Paris sent out 258 standard CVs in response to an ad for a salesperson, it found that a person from North Africa had five times less chance of getting a positive reply.
In Ireland, the 2002 Census revealed that 11% of Muslims were out of work compared to a national average of 4%.
The report says the EU's Muslims also experience Islamaphobic acts ranging from verbal threats to physical attacks which are illegal and which call for firm political leadership.
Irishwoman Anastasia Crickley, who chairs the centre's monitoring board, said it was very difficult to help governments counter racism when many of the 25 member states failed to collect effective data on the problem.
