A number of studies suggest a higher prevalence of suicidal behaviour among body modified individuals compared to the general population. In order to study tattoo features correlated to suicidal behaviour, 184 tattooed individuals aged from 18 to 32 were split into three groups: “ideators” (n = 28), “attempters” (n = 55) and “no suicidal tendencies” (n = 101). The participants were allocated to groups based on their personal history of suicidal attempts and self-injurious behaviour and current suicidal ideation. The history of suicidal and self-injurious behaviour and tattoo features were assessed with a nonstandardized self-report questionnaire. Actual suicidal ideation was assessed using Beck’s Hopelessness Scale and Holden’s Psychache Scale. Self-concept as a possible mediator was assessed using the “Self-concept questionnaire” (V. V. Stolin, S. R. Pantileev). The data was processed with multinomial and logistic nominative regression. The results suppose that having a tattoo on body areas where tattooing is especially painful and having a tattoo depicting only words are associated to having committed a nonlethal suicidal attempt, with the latter fully mediated by its association to systematic self-injury. Results also suggest that there is no association between (a) suicidal behaviour or self-concept and (b) an aggressive tattoo plot, visibility, or number of tattoos. The results can be used as a component of a comprehensive suicidal risk assessment model or in clinical assessment of suicidal risk.