Women's +78 kg category in judo at the 2012 Olympic Games in London took place at the ExCeL Exhibition Centre between 28 July and 3 August.

Idalys Ortiz Bocourt is a Cuban judoka. She competed in the over 78 kg division at the 2008, 2012 and 2016 Olympics and won a medal on each occasion. She won the silver medal in the women's +78 kg event at the 2020 Summer Olympics held in Tokyo, Japan.