Abstract This study sought to determine the knowledge of cancer, cardiovascular, perinatal and respiratory diseases caused by tobacco use among civil servants in Abakaliki metropolis. Survey design was adopted in the study which enabled the researcher to assess opinions on the issue. Primary data were generated using a well-structured questionnaire used for eliciting opinion and 333 respondents were sampled through the use of Taro Yamane statistical formula. The study employed the use of freq...