In a previous study, we reported that 13(E)-labd-13- ene-8α, 15-diol (13E) possesses antiviral and anticancer activities. In this study, the anticancer and antimicrobial activities of 13(E) were evaluated against 4 cancer cell lines and 6 bacteria. 13(E) showed inhibitory effect on a variety of cancer cell lines. The IC50 values was 8.3-21.3 μg/mL. 13(E) was the most effective growth inhibitor of murine leukaemia cell lines P388, producing approximately 8.3 μg/mL of IC50 in the cytopathic effect (CPE) method. 13(E) also inhibited the growth of the gram-positive bacteria (Staphyl℃℃cus aureus, Bacillus cereus and Listeria mon℃ytogenes) and gram-negative bacteria (Vibrio parahaemolyticus, Escherichia coli and Salmonella enteritidis) with a range of minimum inhibitory concentration (MIC) values from 0.092 to 0.598 mg/mL and gram-negative bacteria were more sensitive to the compound (MIC, 0.092 mg/mL).