The Cross of Lorraine, known as the Cross of Anjou in the 16th century, is a heraldic two-barred cross, consisting of a vertical line crossed by two shorter horizontal bars. In most renditions, the horizontal bars are "graded" with the upper bar being the shorter, though variations with the bars of equal length are also seen. The Lorraine name has come to signify several cross variations, including the Patriarchal cross with its bars near the top. The Cross of Lorraine came to the Duchy of Lorraine via the Kingdom of Hungary in the 15th century. Similar two-barred cross symbols prominently feature in heraldry from Poland, Lithuania and Belarus. Its ultimate origins are theorised to be Byzantine. The Cross of Lorraine was used as a symbol of Free France during World War II and was earlier used by French patriots to signify desire to reclaim provinces lost to Germany in the Franco-Prussian War.

The Patriarchal cross is a variant of the Christian cross, the religious symbol of Christianity, and is also known as the Cross of Lorraine. Similar to the familiar Latin cross, the patriarchal cross possesses a smaller crossbar placed above the main one so that both crossbars are near the top. Sometimes the patriarchal cross has a short, slanted crosspiece near its foot. This slanted, lower crosspiece often appears in Byzantine Greek and Eastern European iconography, as well as in other Eastern Orthodox churches. In most renditions of the Cross of Lorraine, the horizontal bars are "graded" with the upper bar being the shorter, though variations with the bars of equal length are also seen.