Attention Deficit / Hyperactivity Disorder (AD/HD) constitutes one of the most common disorders of childhood (Brunstetter, 1985). However, the diagnosis of AD/HD is rarely made before the age of six, as its primary symptoms (hyperactivity, impulsivity, inattention) are often attributed by parents to the young age of the child and, therefore, specialists are not consulted yet. On the contrary, speech problems, which are often associated difficulties of AD/HD, are more easily identified by parents, even in children as young as two years old (Rescorla, 1989). Therefore, the aim of the present study is to study the relationship between AD/HD and speech problems during the preschool age in order to investigate whether speech problems could be used as an early precursor of AD/HD. Parent ratings were obtained from a non-clinical sample for 188 children (mean age = 57.1 months). Two questionnaires were used: a) The “Strengths and Difficulties Questionnaire” (SDQ) (Goodman, 1997), in order to screen for the possibility of ADHD and b) A questionnaire for the assessment of language and speech difficulties. Results revealed that preschool children who showed symptoms of AD/HD have higher possibility to present speech and language problems than “normal” peers or children with other kind of difficulties (r = .30, p<.01). Given the significant correlation between AD/HD and speech problems, it seems that the diagnosis even of minor speech problems during the preschool age is an important indication for the early identification of AD/HD before the age of six. Implications regarding early intervention are discussed.