BACKGROUND:The quality of life (QoL) among survivors of adolescent and young adult (AYA) cancer may be compromised compared with that in the general population. In this study, the authors: 1) assessed for differences in QoL among a national study of AYA cancer survivors compared with the Canadian population and 2) explored the factors associated with poorer QoL in AYA cancer survivors. METHODS: For the current research, data from the Young Adults With Cancer in Their Prime study were used. QoL was measured using physical and mental component scores from a 12-item short-form health status measure. A comparison group was derived from the Canadian Community Health Survey. RESULTS: AYAs (n = 195; 17.8% male; mean ± SD: 35.62 ± 6.89 years on study, 6.48 ± 5.73 years from treatment) were compared with a comparison sample (n = 665; 21.2% male). Among survivors, 31.8% reported poor physical health, and 49.7% reported poor mental health. Compared with the general population, AYAs had significantly lower physical health (F[1,818]