To understand the potential contribution that social support interventions (SSI) can have in mitigating the personal, social and economic costs of tuberculosis (TB) treatment on patients, and improving treatment outcomes, we conducted a literature search to identify psycho-emotional (PE) and socio-economic (SE) interventions provided to TB patients and to assess the effects of these interventions on treatment adherence and treatment outcomes. We searched PubMed and Embase from 1 January 1990-15 March 2015 and abstracts of the Union World Conference on Lung Health from 2010-2014 for studies reporting TB treatment adherence and treatment outcomes following SSI. Twenty-five studies were included in the qualitative analysis; of which eighteen were included in the meta-analysis. Our review and meta-analysis concluded that PE and SE interventions are associated with beneficial effects on TB treatment outcomes. However, the quality of evidence is very low and future well-designed evaluation studies are needed.