References – DN 14: The Great Discourse on Traces Left Behind 
“Please explain what gave rise to the 28 Buddhas Protection Discourse (Amaravati Chanting Book Volume 2, p. 54). Is this a sutta? It didn’t start with ‘Thus have I heard.’ Did Buddha ever mention or acknowledge the existence of other Buddhas?” Answered by Ajahn Pasanno, Ajahn Karuṇadhammo and Ajahn Yatiko. [Protective chants] [Sutta] [Previous Buddhas] // [Metteyya Bodhisatva] [Culture/Thailand] [Ghost] [History/Sri Lankan Buddhism] [Children] [Fear]
Sutta: DN 14: Descriptions of six previous Buddhas.
Sutta: DN 26.25: The future Buddha Metteyya.
Sutta: DN 32: The Āṭānāṭiya Protection.
Suttas: SN 12:4-10 mention six previous Buddhas who understood Dependent Origination.
Thanksgiving Retreat 2012, Session 4, Excerpt 15
[Considering the large numbers of lay disciples who the Buddha declared to have realized stages of awakening in DN 18.1] “I guess they were culturally more open to the path?” Answered by Ajahn Pasanno and Ajahn Amaro. [Lay life] [Stages of awakening] [Culture/India] // [History/Indian Buddhism] [Cultural context] [Buddha]
Sutta: DN 1: The 62 wrong views. [Views]
Sutta: DN 14.1.4: A fortunate aeon. [Previous Buddhas]
Readings from The Island [2025], Session 54, Excerpt 1
The story of the Bodhisattva seeing the old person, the sick person, and the dead person isn’t in the scriptures. Teaching by Ajahn Pasanno. [Buddha/Biography ] [Tipiṭaka] [Stories] // [Jātaka Tales] [Postulants]
Sutta: DN 14.2 ascribes this story to the previous Buddha Vipassī. [Previous Buddhas]
Sutta: Snp 3.1 describes the Bodhisattva’s going forth.
Devotion and Ritual: Becoming the Buddha [2017], Session 1, Excerpt 10