Grief-related beliefs play an important role in bereavement adjustment. This study aimed to investigate the patterns and correlates of grief-related beliefs among recently bereaved adults (n = 311). Latent class analysis results suggested three meaningful grief belief classes could be identified: the High grief belief class (24.1%), Predominantly counterfactual thoughts class (42.4%), and Low belief class (33.4%). Members in the High grief belief class reported the highest levels of grief symptoms, depression and PTSD symptoms, loneliness, and functional impairment. Compared with the Low belief class, unmarried people, people in poor health, individuals who lost parents, partners, or children, and those who experienced violent or unexpected death were more likely to belong to the High grief belief class. Findings of this study support the importance of examining grief-related cognitions in research and clinical practice, especially counterfactual thoughts about the death, which may need to be specifically screened and targeted in treatment.