1 August – Saint Aethelwold of Winchester
The Benedictional of Saint Aethelwold (viewer)
Miniature showing Saint Aethelwold with King Edgar and Saint Dunstan in Cotton MS Tiberius A III (11C)
Stories of the Saints Fifth Series by Mary Seymour.
1 August – The Seven Maccabees and their Mother
Fresco in Santa Maria Antiqua in Rome (description – photo – photo)
Lives of the Saints by Francis Weninger.
6 August – The Transfiguration
Transfiguration by Raphael
7 August – Saint Donatus of Arezzo
Miracle of Saint Donatus by Ribera
12 August – Saint Clare of Assisi
15C Saint Clare Rescuing a Child from a Wolf
Maidens of Hallowed Names by Charles Piccirillo.
15 August – The Assumption of the Blessed Virgin Mary
Fra Angelico, El Greco, Titian (Smarthistory)
16 August – Saint Hyacinth
Apparition of the Virgin and Child to Saint Hyacinthe by Ludovico Carracci
Stories of the Saints Fifth Series by Mary Seymour.
16 August – Saint Roch
Christ Appointing Saint Roch as Patron Saint of Plague Victims by Rubens
St. Roch Interceding with the Blessed Virgin for Victims of the Plague by Jacques-Louis David.
Stories of the Saints for Children Second Series by Mary Seymour.
16 August – Saint Joachim
Joachim Series in the Scrovegni Chapel in Padua
Expulsion of Joachim from the Temple by Giovanni da Milano in the Rinuccini Chapel in Santa Croce in Florence
Expulsion of Joachim by Taddeo Gaddi in the Baroncelli Chapel in Santa Croce in Florence
Expulsion of Joachim by Domenico Ghirlandaio in the Tornabuoni Chapel in Santa Maria Novella in Florence
Annunciation to Joachim by Guido Reni in the Cappella dell’Annunziata al Quirinale
Lives of the Saints by Francis Weninger.
19 August – Saint Louis of Toulouse
Altar of Saint Louis of Toulouse by Simone Martini
Lives of the Saints by Francis Weninger.
20 August – Saint Bernard of Clairvaux
The Virgin Appearing to Saint Bernard by Fra Filippo Lippi
The Virgin Appearing to Saint Bernard by Pietro Perugino
The Virgin Appearing to Saint Bernard by Filippino Lippi
Little Lives of the Great Saints by John O’Kane Murray.
22 August – Saint Symphorian
The Martyrdom of Saint Symphorian by Ingres
Lives of the Saints by Francis Weninger.
24 August – Saint Bartholomew
Martyrdom of Saint Bartholomew by Ribera
Martyrdom of Saint Bartholomew by Tiepolo
Stories of the Saints Third Series by Mary Seymour.
25 August – Saint Louis
True Historical Stories for Catholic Children by Josephine Portuondo.
27 August – Saint Joseph Calasanz
The Last Communion of St. Joseph Calasanz by Goya
Stories of the Saints Third Series by Mary Seymour.
28 August – Saint Augustine
Saint Augustine in His Study by Botticelli (Ognissanti)
Saint Augustine in His Study by Carpaccio
Little Lives of the Great Saints by John O’Kane Murray.
29 August – The Decollation of John the Baptist
The Altar of Saint John by Rogier van der Weyden
Beheading by Caravaggio
Nihil sub sole novum 
