An adverse nutritional environment during the perinatal period increases the risk of adult-onset metabolic diseases, such as obesity, which may persist across generations. Adipose tissue (AT) from offspring of malnourished dams has been shown to display altered adipogenesis, lipogenesis, and adipokine expression, impaired thermogenesis, and low-grade inflammation. Although the exact mechanisms underlying these alterations remain unclear, epigenetic processes are believed to have an important role. In this review, we focus on epigenetic mechanisms in AT that may account for transgenerational dysregulation of adipocyte formation and adipose function. Understanding the complex interactions between maternal diet and epigenetic regulation of the AT in offspring may be valuable in improving preventive strategies against the obesity pandemic.