The Icelandic play-maker was his country’s top scorer in qualifying
The unfancied islanders kick off their campaign today against Portugal with Sigurdsson expected to play a vital role should they hold any hope of making it past the group stages.
The Swansea man scored 11 goals in the Premier League last season, eight of which came after the turn of the year.
He finished the campaign with four goals in his last eight games, and he is hoping that he can replicate his form in France.
“I scored some goals at an important time of the season and I was really happy to get into double figures,” he said.
“It was great to be peaking in form just before the Euros, and now I want to take that into the tournament.”
Iceland stunned many across Europe by qualifying for the tournament in a group containing Turkey, the Czech Republic and also the Netherlands – who missed out on this summer’s championships altogether.
Cristiano Ronaldo's Portugal are Iceland's first test
The tiny island, that has a population of just 325,000, will be competing in a major international tournament for the first time in France.
Their first fixture will be against Cristiano Ronaldo’s Portugal, who look to be one of the stronger sides in Group F, along with Hungary and Austria – who had a 100% record in qualifying.