Attention deficit hyperactivity disorder (ADHD) is one of the commonest psychiatric disorders in children. Stimulants are frequently used in the management of ADHD. Due to adverse effects of medication there is a growing interest in complementary treatments. Complementary and alternative medicine therapies including yoga are commonly used in children with ADHD, but little is known about the efficacy of these therapies. Yoga requires long periods of concentration and is therefore supposed to reduce attention deficits. The published investigations without a control group report positive effects of yoga on ADHD symptoms and school performance. However, these studies do not allow causal conclusions in regard to the effects of yoga in the treatment of ADHD. The findings from exploratory randomized controlled studies suggest that future research on the efficacy of yoga in ADHD may yield results of therapeutic value. At present the small number of available investigations renders impossible the drawing of any conclusions regarding the effectiveness of yoga for ADHD in children. Large, well-controlled, randomized trials are needed in order to establish the potential value of yoga as a single treatment or adjunct to standard ADHD therapies.