Avram Grant, the former Chelsea manager, has adopted the Polish nationality of his family who were forced to flee Nazi occupation in 1939.
Mr Grant received a Polish passport during a private ceremony at the country's embassy in London on Monday.
Accepting the passport, Mr Grant said: "It is a very important and emotional day. Feeling Polish comes naturally to me. My father, Meir, was a Polish citizen. He was born in Mlawa, near Warsaw, like my grandfather Avraham, great-grandfather Herschel, and the generations before them."
Mr Grant's family was deported to Siberia, where his father lost both his parents and five siblings.
Currently manager of Ghana's national team, Mr Grant said receiving the citizenship was part of a long endeavour to discover his family's past.
He said: "I am in Poland at least four to five times a year. Since visiting for the first time in 1988, I made the journey more than 100 times."
He had requested the passport procedure be completed in time for Euro 2016 so that he could support the Polish team currently playing in the tournament in France.
To get more news, click here to sign up for our free daily newsletter.