B

• Beatifications by Pope Leo XIII(38 P)
• Bishops appointed by Pope Leo XIII(29 P)

C

• Canonizations by Pope Leo XIII(26 P)
• Cardinals created by Pope Leo XIII(149 P)

D

• Documents of Pope Leo XIII(3 C, 3 P)

R

• Ralliement (Catholicism in France)(1 C, 10 P)

V

• Venerated Catholics by Pope Leo XIII(2 P)

• Pope Leo XIII

A

• Americanism (heresy)

C

• Carpineto Romano
• Catholic University of America
• Clare of Montefalco
• Concordat of 1887 (Colombia)

D

• Distributism

E

• Editio Leonina

F

• Domenico Ferrata

G

• James Gibbons

H

• Joseph Hergenröther
• Humanum genus

M

• Mariology of Pope Leo XIII
• Mediatrix
• Louis de Montfort

N

• John Henry Newman

P

• Ludwig von Pastor
• Giuseppe Pecci
• Plenary Councils of Baltimore
• Pontifical Academy of Saint Thomas Aquinas
• Pope Leo XIII and Poland

R

• Restoration of the Scottish Catholic hierarchy
• Pope Leo XIII and Russia

S

• Sua Santità papa Leone XIII

T

• Theology of Pope Leo XIII
• Thérèse of Lisieux
• Thomism

V

• Vatican Apostolic Archive

Z

• John Joseph Frederick Otto Zardetti