Background: Adolescent and young adults (AYA) cancer survivors have worse long-term physical health than survivors of adult cancers. Healthy lifestyle behaviors can maximize physical health and enhance quality of life. The National Comprehensive Cancer Network (NCCN) publishes survivorship guidelines for healthy behaviors; however, it is unclear if AYA survivors follow these recommendations. Methods: This is a secondary analysis of a waitlist-controlled trial of an adapted mind body stress management group program for AYA survivors recruited between 03/2019-09/2020. Participants completed self-report questionnaires assessing tobacco use, e-cigarette use, alcohol use, physical activity, and sleep quality both before and after completing the 8-week group program. Descriptive statistics were used to characterize the proportions of survivors meeting NCCN guidelines at time of enrollment. Results: Seventy-two AYA survivors participated in this study (mean age 24, 74% female, 60% Non-Hispanic White, 21% Hispanic, 4% Black, 53% hematologic malignancy, mean 1.6 years post-treatment).Table 1 summarizes NCCN guidelines and concordant behavior at enrollment. Most participants met guidelines for tobacco and e-cigarette use at study entry, with the majority reporting they abstained from using tobacco (85%) and e-cigarettes (90%). Only 28% reported abstaining from any alcohol use. Of those who consumed alcohol, most reported consuming < 3 drinks per day (83%), but 65% endorsed at least occasional binge drinking behavior ( > 5 drinks). Only 52% met guidelines for vigorous- or moderate- intensity activity (i.e. 75 and 150 minutes weekly, respectively). Specifically, participants reported a median of 47.5 minutes/week (IQR 0-120 min/week) of vigorous-intensity activity and 60 minutes/week (IQR 30-140) of moderate-intensity activity. Many experienced sleep concerns, with only 30% reporting good or very good sleep (i.e. > 4 on a 1 (very poor)-5 (very good) Likert scale). Conclusions: In a racially/ethnically diverse sample of AYA survivors, NCCN survivorship guideline concordance for healthy lifestyle was mixed. Of concern was that AYA survivors’ use of tobacco and e-cigs was similar to the general population. Furthermore, alcohol and physical activity recommendations were mostly not followed, and reported sleep quality was poor. These results highlight the need to better understand barriers and promote healthy lifestyles to optimize post-treatment outcomes.