Charlie Flanagan said the country had “people active on the ground” in London who were looking to take advantage of thousands of jobs that might leave the UK as a result of Brexit to be based within the EU.
Some believe London's place as a global financial centre could be at risk as a result of the EU exit and expected single market departure.
Speaking to Bloomberg, Mr Flanagan said Ireland's skilled workforce and reputation in financial services would encourage UK workers to head there.
Anchor Vonnie Quinn quoted figures from stockbroking firm Goodbody which state Dublin could potentially gain between 12,000 and 15,000 financial-sector jobs as a result of Brexit.
PwC has also estimated 85,000 jobs could be relocated to EU member states if the UK leaves the single market.
Irish Minister Charlie Flanagan says Dublin could poach UK jobs
We expect there will be opportunity and our people are active on the ground
Asked how Ireland could snatch jobs from the UK, Mr Flanagan said: “This is a real and difficult challenge for Ireland.
“The withdrawal of the United Kingdom from the European Union is not something that we supported however, that’s in train now and there will be opportunities for Ireland.
“What we offer in terms of a track record of dealing particularly in international financial services, Dublin being a place that is renowned for its skilled workforce.
Ireland has “people active on the ground” in London
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“So we expect there will be opportunity and our people are active on the ground in London because it seems clear that a UK outside of the European Union will be very much a changed UK.
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“Ireland will still be firmly remaining a positive and active member of EU 27 and we look forward to exploiting these opportunities for the benefit of our people and also for people who wish to come and trade in Dublin.”
He added attractive corporation tax rates would continue in Ireland. But Theresa May has hinted she would consider slashing corporation tax in Britain further in the future, making it one of the most competitive countries globally.
Theresa May's 12 point Brexit plan Mon, January 16, 2017
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Continued cooperation with the EU to tackle terrorism and international crime.
Last month, Change Britain, which was born out of the Vote Leave campaign and is backed by a number of prominent Brexiteers, released research claiming that a ‘hard Brexit’ would create 400,000 new jobs.
The think tank said its prediction relied on the UK signing free-trade deals with a number of major world economies and was based on European Union figures on the job-creating powers of such pacts.
The report was announced by former CBI director-general Lord Digby Jones, a prominent Brexit supporter.
He said: “The UK has a rich history as a great trading nation. It is therefore no surprise that a number of major economies have already expressed an interest in striking free trade agreements with us.
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