Background: Knowledge about living donor kidney transplant (LDKT) is associated with greater LDKT access. Yet, little is known about factors associated with high LDKT knowledge.Methods: As part of a clinical trial, we conducted a cross-sectional analysis of data obtained from individuals seen in nephrology clinics who were deemed candidates for pre-emptive LDKT. We assessed participants’ LDKT knowledge [10-point scale based on correct answers to questions about prognosis, donation, and financial aspects of LDKT; (high knowledge ≥8)], self-reported receipt of information about LDKT from various health professionals, and self-reported history of having shared information about LDKT with family members or friends. In multivariable logistic regression models adjusting for participants’ age, race, and total household income, we quantified the association of participants’ high LDKT knowledge with their receipt of LDKT information from health professionals and their sharing of LDKT information with family/friends. Results: Among 130 participants, the median (IQR) age was 59.5 (52.0-65.0) years, 60% were female, 47.7% were Black or African American, and 49.2% had a high school education or less. Participants had seen their nephrologists for a median (IQR) of 2.0 (1.0-4.0) years. Over half (55.4%) had high LDKT knowledge. Nearly one third reported having received LDKT information (33.1%) or sharing LDKT information with family/friends (28.5%). After adjustment, those who received (versus did not receive information) and shared information with family/friends had 3-fold higher odds of high LDKT knowledge (3.05 [1.24, 8.08]). Individuals who received LDKT information (versus did not receive information) from health professionals had 4-fold higher odds of high LDKT knowledge (adjusted OR [95% CI]: 4.01 [1.49, 12.18]. Conclusions: Both the receipt of LDKT information from health professionals and sharing of LDKT information with family members/friends were associated with high LDKT knowledge. Improved provision of LDKT information to patients with advanced CKD and encouragement to share information with family members or friends could aid efforts to improve LDKT rates.Trial registration: ClinicalTrials.gov number, NCT00932334.