Based on the Mental Health Continuum Short Form administered in the 2012 Canadian Community Health Survey - Mental Health (CCHS-MH), the percentages of Canadians aged 15 or older classified as having flourishing, moderate or languishing mental health were 76.9%, 21.6% and 1.5%, respectively. Compared with estimates for other countries, a higher percentage of Canadians were flourishing. In accordance with the complete mental health model, mental health was also assessed in combination with the presence or absence of mental illness (depression; bipolar disorder; generalized anxiety disorder; alcohol, cannabis or other drug abuse or dependence). An estimated 72.5% of Canadians (19.8 million) were classified as having complete mental health; that is they were flourishing and did not meet the criteria for any of the six past 12-month mental or substance use disorders included in the CCHS-MH. Age, marital status, socio-economic status, spirituality and physical health were associated with complete mental health. Men and women were equally likely to be in complete mental health.