Background: Low back pain (LBP) remains a prevalent health problem that is characterized by ambiguity and can progress towards chronic disability. Recently, researchers have started to focus on understanding whether and how attitudes and beliefs of health professionals influence their decisions and outcomes among LBP patients.Objectives: The purpose of this study was to characterize Lebanese doctors of physical therapy (DPT)s attitudes and beliefs towards LBP and its management. A secondary objective was to examine whether and how DPTs own intolerance of uncertainty (IU), knowledge and treatment orientation predicts work and activity recommendations among their LBP patients.Methods: A national survey targeted 129 physical therapist (PT) and included: 1) a filter question; 2) sociodemographic section; 3) a question about recent LBP clinical practice guidelines (CPGs) knowledge; 4) pain attitudes and beliefs scale for physiotherapists (PABS-PT); 5) intolerance of uncertainty scale-12 (IUS-12); 6) and two clinical vignettes that described patients with LBP.Results: A total of 16 DPT completed the survey, of those, 62.5% followed a biomedical orientation, and were restrictive in the recommendations given to their patients. In addition, knowledge of CPGs showed a significant strong relationship with IU (P=0.005) and the recommendation to return to activity (RA) in vignette 1(P= 0.031). Discussion:The current results showed partial adherence to recent LBP guidelines, where most of the DPTs had a biomedical orientation that impacted negatively their recommendations for patients with LBP and DPTs who showed knowledge of LBP CPGs had the lowest IU and tended not to be restrictive in their recommendations to RA.