Studies have examined floor to stand performance in varied adult populations both quantitatively and qualitatively. Despite an elevated risk of falls and inability to independently return to stand after a fall, few have examined the ability to perform floor to stand in patients recovering from stroke. The purposes of this study were to (1) identify relationships between floor to stand performance using the Timed Supine to Stand test (TSS) and physical performance measures of gait, balance and balance confidence, along with individual characteristics in persons in the subacute phase after stroke and (2) to analyze movement strategies used in the completion of the TSS. Fifty-eight adults [59.2 (13.9); 34 (58.6%) male] in the subacute phase after ischemic or hemorrhagic stroke who could stand from the floor with no more than supervision completed the TSS and physical performance assessments. The median time to complete the TSS in our sample was 13.0 (15.5) seconds. Fifty-five (94.8%) participants used an asymmetric roll strategy combined with intermediate positions to complete the TSS. TSS time was significantly correlated with physical performance tests including Timed Up and Go (TUG) test (r = .70, p < .01), gait velocity (r = -.67, p < .01), Dynamic Gait Index (r = -.52, p < .01), Activities-specific Balance Confidence scale (r = -.43, p < .01), and individual characteristics including days since stroke (r = .30, p < .05). Thirty-two percent of the variance in TSS time (p < .001) was attributed to TUG time and use of the quadruped position in the transition to stand. Findings serve to improve functional mobility assessment post stroke and to formulate effective treatment interventions to improve floor to stand performance after stroke.