BACKGROUND: Studies on waterpipe tobacco dependency are currently limited. AIMS: This study assessed self reported addiction to waterpipe tobacco smoking among Egyptian waterpipe smokers and identified the associated sociodemographic factors, perceived behavioural control and patterns of waterpipe tobacco smoking. ...Data on 1490 current waterpipe smokers were analysed including: sociodemographic characteristics, waterpipe tobacco smoking behaviour age at starting, frequency, amount, company and place of smoking, and expenditure , perceived harm of waterpipe tobacco smoking, and self reported addiction to and perceived behavioural control of waterpipe smoking ability to quit, difficulty in quitting, quit attempts and intention to quit . ...