The cardinal electors in the 1958 papal conclave were 53, of whom 51 participated. This list is arranged by region and within each alphabetically. Two were impeded from attending by their Communist governments: József Mindszenty was confined to the U.S. Embassy in Budapest, and Aloysius Stepinac was under house arrest in Yugoslavia. A 54th cardinal, Edward Mooney of Detroit, traveled to Rome to attend the papal conclave, but died of a heart attack three hours before it began.

Roman Curia

Europe

Italy

France

Spain

Germany

Belgium

Hungary

Ireland and United Kingdom

Poland

Portugal

Soviet Union

Yugoslavia

North America

Canada

United States

Cuba

South America

Brazil

Argentina

Chile

Colombia

Ecuador

Asia

China

India

Syria

Africa

Mozambique

Oceania

Australia