Abbé Joseph-Antoine Boullan (Saint-Porquier, Tarn-et-Garonne, 18 February 1824 – 4 January 1893, Lyon) was a French Roman Catholic priest and later a laicized priest, who is often accused of being a Satanist although he continued to defend his status as a Christian.
He was a friend and inspiration of the writer Joris-Karl Huysmans. Huysmans with Henri Antoine Jules-Bois supported Boullan in a celebrated occultist feud with the Marquis Stanislas de Guaita.
- Liukkonen, Petri. "Joris-Karl Huysmans". Books and Writers (kirjasto.sci.fi). Finland: Kuusankoski Public Library. Archived from the original on 10 February 2015., Robert Graham Irwin, The Lust of Knowing (2006) p. 220.
- Lucie-Smith, Edward. (1972) Symbolist Art. London: Thames & Hudson, p. 110. ISBN 0500201250
- The Invisible Basilica: Gerard Encausse (Papus)