Taking into account the complementary treatments used today, this study examines the impact of cognitive mindfulness therapy in persons with Attention Deficit Hyperactivity Disorder (ADHD). A systematic review was carried out following the PRISMA method, including a total of 34 experimental articles from scholarly journals indexed in Web of Science and Scopus whose year of publication is limited to the last five years (2017-2021). The variables studied the most in the scholarly publications are divided into two categories: cognitive (attention, concentration and emotional regulation) and behavioural (hyperactivity, impulsiveness and inhibitory control). A standard table reflects what variables are used in each publication examined. A strong positive impact was found for both types of variables after the application of this therapy, which produced positive effects in the samples. Mindfulness is a positive complementary treatment in people with ADHD. [English translation by Mary Black.]