Pope John XXIII
- Feature article on Time magazine's Man of the Year for 1962. [Time]
- http://www.catholic.net/RCC/News/Time_Mag/1962.html

Pope Giovanni XXIII
- Official web site of the birthplace of John XXIII, in Sotto il Monte. Lavishly illustrated biography, some episodes in greater detail, news, petitions. All of his encyclicals, and some other writings by or about him, in PDF.
- http://www.papagiovanni.com/

Office of Papal Liturgical Celebrations: Pope John XXIII
- Biographical article published in L'Osservatore Romano 6 September 2000, and Pope John Paul II's homily at the beatification.
- http://www.vatican.va/news_services/liturgy/saints/ns_lit_doc_20000903_john-xxiii_en.html

The Holy See: Pope John XXIII
- Short biography of John XXIII, at the Vatican's official web site.
- http://www.vatican.va/holy_father/john_xxiii/biography/documents/hf_j-xxiii_bio_16071997_biography_en.html

Everything2: Pope John XXIII
- Biography of the most popular pope of the 20th century.
- http://www.everything2.com/index.pl?node_id=366987

John XXIII
- Short biography of the pope.
- http://www.cfpeople.org/Books/Pope/POPEp259.htm

Illuminating Lives: Pope John XXIII
- Essay on the inspiring life of John XXIII, by Beth Randall. Illustrated.
- http://www.mcs.drexel.edu/~gbrandal/Illum_html/JohnXXIII.html

Patron Saints Index: Pope John XXIII
- Illustrated profile, with links.
- http://www.catholic-forum.com/saints/pope0261.htm

Pope John XXIII (Angelo Roncalli), Bishop
- Biography. With prayer in traditional and contemporary language.
- http://elvis.rowan.edu/~kilroy/JEK/06/04.html