The 31st International Eucharistic Congress, held in Dublin 22–26 June 1932, was one of the largest eucharistic congresses of the 20th century. Ireland was then home to over three million Catholics and It was selected to host the congress as 1932 was the 1500th anniversary of Saint Patrick's arrival. The theme was "The Propagation of the Sainted Eucharist by Irish Missionaries".

In the Catholic Church, a eucharistic congress is a gathering of clergy, religious, and laity to bear witness to the Real Presence of Jesus in the Eucharist, which is an important Catholic doctrine. Congresses bring together people from a wide area, and typically involve large open-air Masses, Eucharistic adoration, and other devotional ceremonies held over several days. Congresses may both refer to National and International Eucharistic Congresses.