This chapter explores divorce law reform in Northern Ireland. The Northern Ireland government liaised with Westminster regarding the removal of divorce from parliament’s jurisdiction from 1931; however, Westminster’s passage of Herbert’s bill along with the reform which in 1937 added desertion of three years’ duration; presumption of a spouse’s death; cruelty, although still legislatively undefined; and incurable insanity as sole grounds for divorce revived the debate in regard to equity of divorce provison throughout the UK. Debates concerning the Matrimonial Causes Act (NI) of 1939 are explored alongside the impact of the reform which transferred divorce jurisdiction to the Northern Ireland High Court, reformed the grounds for divorce along English lines and ended the faltering criminal conversation action, replacing it with a statutory action for damages. The subsequent rise in divorce rates in Northern Ireland and later divore law reforms are explored as well as the continuing moral conservatism bolstering cross-party oppoition to ‘easy’ divorce.