Apostles Peter
SaintFeast: July 6
Apostles Peter
SaintFeast: 29 June
Apostles Philip
SaintFeast: 3 May (Roman Catholic); 14 November (Eastern Orthodox)
Apostles Simon
SaintFeast: 28 October
Apostles Simon
SaintFeast: 28 October
Apostle St Peter
SaintFeast: 29 June
Apostle Thomas
SaintFeast: 3 July (Roman Catholic); 6 October (Eastern Orthodox)
Apostle Thomas
SaintFeast: 3 July (Roman Catholic, Syro-Malabar); 6 October (Eastern Orthodox); 21 December (older Western martyrologies)
Apphia
SaintFeast: 22 November
Aprio de Roma
Saint
Apronian
SaintFeast: 2 February
Aprunculus of Treves
Saintd. 526
Feast: 22 April
Aquila
SaintFeast: 8 July (Western); 13 February and 14 July (Eastern Orthodox)
Aquila
SaintFeast: 8 July
Aquilina
Saint281 - 293
Feast: 13 June
Aquilinus of Évreux
Saint620 - 695
Feast: 19 October
Aquilinus of Milan
Saintd. 1015
Feast: 29 January
Arbogastus
Saintd. 678
Feast: 21 July
Arcade
SaintFeast: 12 January
Arcade de Novgorod
Saintd. 1163
Arcadius
SaintFeast: 12 January
Arcadius
Saint1889 - 1937
Arcadius of Mauretania
Saintd. 302
Feast: 12 January
Arcàngela Badosa i Cuatrecasas
Venerable1878 - 1918