J. K. Rowling

Cyfres Harri Potter

• Harri Potter a Maen yr Athronydd (26 Mehefin 1997)
  • Teitl gwreiddiol: Harry Potter and the Philosopher's Stone; y 2003 cyfieithiad i'r Gymraeg gan Emily Huws.
• Harry Potter and the Chamber of Secrets (2 Gorffennaf 1998)
• Harry Potter and the Prisoner of Azkaban (8 Gorffennaf 1999)
• Harry Potter and the Goblet of Fire (8 Gorffennaf 2000)
• Harry Potter and the Order of the Phoenix (21 Mehefin 2003)
• Harry Potter and the Half-Blood Prince (16 Gorffennaf 2005)
• Harry Potter and the Deathly Hallows (21 Gorffennaf 2007)

Llyfrau eraill

• Fantastic Beasts and Where to Find Them (ategiad i'r gyfres Harri Potter) (2001)
• Quidditch Through the Ages(ategiad i'r gyfres Harri Potter) (2001)
• The Tales of Beedle the Bard (ategiad i'r gyfres Harri Potter) (2008)
• The Casual Vacancy (2012) (nofel gyntaf i oedolion)

Erthyglau

• Beirniadu Harry Potter Cymraeg
• "The First It Girl: J.K. Rowling reviews Decca: the Letters of Jessica Mitford ed by Peter Y Sussman", The Daily Telegraph 26 July 2006
• Introduction to "Ending Child Poverty" in Moving Britain Forward. Selected Speeches 1997–2006 by Gordon Brown, Bloomsbury (2006)
• Foreword to the anthology Magic, edited by Gil McNeil and Sarah Brown, Bloomsbury (2002)
• The Fringe Benefits of Failure, and the Importance of Imagination, J.K. Rowling, Harvard Magazine, 5 June 2008
• Foreword to "Harry, A History", written by Melissa Anelli, Pocket (2008)
• Gordon Brown - The 2009 Time 100 Archifwyd 2013-08-26 yn y Peiriant Wayback. J.K Rowling, Time Magazine, 30 April 2009