The 108 Martyrs of World War II, known also as the 108 Blessed Polish Martyrs (Polish: 108 błogosławionych męczenników), were Catholics from Poland killed during World War II by Nazi Germany.

Their liturgical feast day is 12 June.

The 108 were beatified on 13 June 1999 by Pope John Paul II in Warsaw, Poland.

The group comprises 3 bishops, 79 priests, 7 male religious, 8 female religious, and 11 lay people.

There are two parishes named for the 108 Martyrs of World War II in Powiercie in Koło County, and in Malbork, Poland.