The Glorious Heresies is a novel by Irish author Lisa McInerney, first published 9 April 2015 in the United Kingdom by John Murray.

The novel is set in Cork, Ireland, in the wake of economic downturn, and explores the meager circumstances and decisions of several characters who are on the fringe of society.

The plot explores drug and alcohol abuse, poverty, drug dealing, prostitution, religious abuse, unplanned pregnancy, rehabilitation, and organised crime, enveloped around the accidental homicide of someone, committed by 59-year-old Maureen, which in varying ways implicates the rest of the characters.

The narrative follows a young man called Ryan as he struggles with family issues and the Irish criminal underworld.

[3] The Guardian criticised the novel for lacking in energy during its final third but said McInerney "has talent to burn".