smoked and smokeless tobacco use among pulmonary tuberculosis patients under rntcp in urban puducherry india background smoking is associated with unfavourable treatment outcomes like failures and defaults among the tb patientsobjectives to study the prevalence and pattern of tobacco use among the pulmonary tuberculosis ptb patients in urban pondicherry and study the association of various sociodemographic variables with current smoked and smokeless tobacco usersmethods a crosssectional study was conducted among 235 ptb patients from 6 randomly selected urban phcs of pondicherry from jan 2013 to march 2014 fagerstrom test for nicotine dependence was used chisquare test and multiplelogistic regression were doneresults prevalence of smoking among the ptb patients at the time of tb diagnosis was 353 whereas the same during the continuation phase cp was 234 among 83 smokers at the time of diagnosis 52 modified and 31 did not modify their smoking after tb diagnosis similarly prevalence of smokeless tobacco use both at the time of tb diagnosis and during cp was 98 male and lower education level was associated with current smoking similarly female and lower education level was associated with current smokeless tobacco useconclusions onethird of ptb patients used smoked or smokeless tobacco during their cp health programme needs to concentrate on ptb patients who continue to use smoked or smokeless tobacco during their treatment necessary interventions need to be planned