IntroductionSuicidal behaviour is a major public health concern in Africa and a cause of premature mortality. The availability of community epidemiological data in Ethiopia is limited. This study assessed the prevalence of suicidal behaviour and its associated factors in Jimma Town, Southwest Ethiopia.MethodsUsing the Suicide Behaviour Questionnaire-Revised (SBQ-R), a community-based cross-sectional survey was conducted between September and November 2021. Multistage sampling was used to screen 636 participants for suicidal behaviour. The association between suicidal behaviour and other variables was explored using binary and multivariable logistic regression analyses.ResultsThe overall estimated prevalence of suicidal behaviour of the respondents in the study was 7.9% (95% CI 5.9% to 10.3%), using the SBQ-R score (>7). One-third of the individuals with lifetime attempts encountered stigma. Multivariable logistic regression models indicated that being female (AOR 2.81, 95% CI 1.48 to 5.31), having depression (AOR 6.9, 95% CI 1.98 to 24.57), family history of mental illness (AOR 4.11, 95% CI 1.38 to 12.19), poor social support (AOR 3.86, 95% CI 1.23 to 12.15) and good coping efficacy (AOR 0.91, 95% CI 0.88 to 0.94))were significantly associated for suicidal behaviour with p value less than 0.05.ConclusionThe overall prevalence of suicidal behaviour was relatively higher in this population than in other studies done in Ethiopia. In addition, the current study indicates the presence of suicide stigma, which further influences poor health-seeking behaviours. The factors significantly associated with suicidal behaviour in this study included being female, having a family history of mental illness, poor social support, poor coping self-efficacy and depressive symptoms. Findings warrant the attention of policy-makers in early screening of depression, developing preventive measures targeting risk factors and enhancing access to mental healthcare services.