Acanthopanax divaricatus var. albeofructus (ADA) is commonly ingested as a traditional medicine or as a component of a health drink in Korea. In this phytochemical study, nine phenolics (1 - 9) and three lignans (10 - 12) were isolated from the MeOH extract of the stems of ADA. Chemical structures were elucidated by comparing spectroscopic data with reported values. Nuclear factor kappa B ($NF-{kappa}B$) inhibitory activity of the isolated compounds was evaluated using an $NF-{kappa}B$ luciferase assay in HepG2 cells. Among them, compounds 1, 3 - 8, and 11 showed significant inhibitory effects on $TNF{alpha}$-induced $NF-{kappa}B$ transcriptional activity in a dosedependent manner, with $IC_{50}$ values ranging from 13.25 to $37.36{mu}M$. Further studies on potential anti-inflammatory effects and the benefits of phenolic and lignan components from ADA are warranted.