Rasiak made his international debut for Poland on 10 February 2002 in a friendly match with Faroe Islands under manager Jerzy Engel.
He then had to wait a year before his next international appearance under Paweł Janas, before becoming a regular in the Polish team.

Rasiak has made 37 appearances for his country, scoring on 8 occasions, and was part of the team that qualified for the 2006 World Cup.
He was selected for the 23-man national squad that competed at the World Cup Finals in Germany.
Two years later he was not selected for the 2008 European Championships.
Rasiak made his international debut for Poland on 10 February 2002 in a friendly match with Faroe Islands under manager Jerzy Engel. He then had to wait a year before his next international appearance under Paweł Janas, before becoming a regular in the Polish team.
Rasiak has made 37 appearances for his country, scoring on 8 occasions, and was part of the team that qualified for the 2006 World Cup. He was selected for the 23-man national squad that competed at the World Cup Finals in Germany. Two years later he was not selected for the 2008 European Championships.
Grzegorz Rasiak