Patients undergoing hematopoietic cell transplantation (HCT) must cope with immense physical and psychological symptoms. Yet, studies examining pre-HCT coping are limited. We aimed to characterize pre-HCT coping, evaluate the association of coping with baseline quality of life (QOL) and psychological distress, and identify sociodemographic factors associated with pre-HCT coping. We conducted a cross-sectional analysis of baseline data from a multi-site randomized supportive care intervention trial among patients with hematologic malignancies undergoing allogeneic or autologous HCT. We assessed QOL (Functional Assessment of Cancer Therapy-Bone Marrow Transplant), psychological distress (Hospital Anxiety and Depression Scale and PTSD - Civilian Version), and coping (Brief-COPE) within 72 hours of admission for HCT. We used the median split method to dichotomize coping and multivariate regression analyses to characterize the association of coping with psychological distress and QOL. Of pre-HCT patients (n=360, mean age=55.4, 49.7% autologous), 43.5% were high utilizers of approach-oriented coping, while 31.3% were high utilizers of avoidant coping. Patients reported high use of emotional support (60.9%), acceptance (51.2%), self-blame (33%), and denial (31.3%). Older age (>65 years) was associated with less frequent use of avoidant coping (OR=0.5, p=0.01). Approach-oriented coping was associated with better pre-HCT QOL (B=6.7, p=0.001) and lower depression (B=-1.1, p=0.001) and anxiety (B=-0.9, p=0.02) symptoms. Avoidant coping was associated with worse pre-HCT QOL (B=-13.3, p<0.001) and symptoms of depression (B=1.9, p<0.001), anxiety (B=3.1, p<0.001), and PTSD (B=8.1, p<0.001). Pre-HCT coping is strongly associated with psychological distress and QOL. These data support the need for interventions to address coping during HCT hospitalization.