Lauridsen has been an established member of the Danish junior team, competing in various World U18 Championships and World Junior Championships.
In the 2010 Championship, Lauridsen was named as the Division I Best Defenseman for the tournament and repeated his performance the following 2011 Championship to lead all defenseman in points.

After the completion of his first professional season, Lauridsen was named to the Danish squad to make his senior debut at the 2013 World Championships in Sweden.
He played his first full international in an opening game defeat to Canada on 4 May 2013.
Playing alongside brother Oliver, he appeared in every game for Denmark to finish with 1 assist in 7 games to help avoid relegation and finish in 12th place.
Lauridsen has been an established member of the Danish junior team, competing in various World U18 Championships and World Junior Championships. In the 2010 Championship, Lauridsen was named as the Division I Best Defenseman for the tournament and repeated his performance the following 2011 Championship to lead all defenseman in points.
After the completion of his first professional season, Lauridsen was named to the Danish squad to make his senior debut at the 2013 World Championships in Sweden. He played his first full international in an opening game defeat to Canada on 4 May 2013. Playing alongside brother Oliver, he appeared in every game for Denmark to finish with 1 assist in 7 games to help avoid relegation and finish in 12th place.
Markus Lauridsen