This chapter addresses the topic of brain tumors as causes of epilepsy. It focuses on secondary brain tumors, commonly referred to as solid metastatic brain tumors, and neoplastic meningitis. Epileptic seizures in patients with cerebral metastatic disease are most likely multifactorial, however, a number of factors are considered to be contributing to the development and continuation of these seizures in a subgroup of individuals. Antiepileptic drugs are known to reduce the activity of chemotherapeutic drugs. The treatment of epilepsy in patients with secondary brain tumors should involve a multidisciplinary team that is knowledgeable about all the surgical, radiation, and therapeutic options in the management of these patients. Research needs to be focused on the best antiepileptic drug (AED) or drug combination to use in these patients so that new practice guidelines can be developed to improve patient care.