Polyphenolic compounds extracted from various algae species have a wide range of biological activities. The aim of the study was to determine the antioxidant and antibacterial properties of enzymatic extracts of the algae Fucus vesiculosus and Furcellaria lumbricalis. Identification of algae collected from the Baltic Sea coast showed that they belonged to the species F. lumbricalis and F. vesiculosus L. The content of total phenolics in F. vesiculosus sample was found to be 40.16±0.50 and 38.36±0.40 mg/g in F. lumbricalis sample. Cellulase had the greatest effect on both F. vesiculosus and F. lumbricalis in enzymatic hydrolysis, with extraction yields of 40.16±1.00% and 38.36±2.13%, respectively. The gallic acid content of F. vesiculosus was 176.05 µg/g and that of F. lumbricalis was 20.37 µg/g. Among the algal extracts, the samples obtained by enzymatic extraction at 45°C for 12 h were the most efficient in scavenging DPPH radicals; the value for F. vesiculosus was 287.15±0.90 μmol TE/g and for F. lumbricalis was 273.36±0.90 μmol TE/g. The activity of F. lumbricalis extracts against ABTS radicals was significantly lower than that of F. vesicuosus extracts. The extracts obtained using cellulase enzyme had the highest antimicrobial activity against E. coli (20.0±0.5 mm), against P. aeruginosa (24.0±0.5 mm), B. subtilis (18.0±0.5 mm), and C. albicans (23.0±0.5 mm). The key factors in the extraction of polyphenols are the choice of enzyme and optimal extraction conditions, which confirms the prospect of their use as polyphenolic components for the production of pharmaceuticals.