S. laevis may refer to: Scleria laevis, the smooth scleria, a flowering plant species in the genus Scleria Serrata laevis, a sea snail species Shorea laevis, a plant species found in Indonesia, Malaysia, Myanmar and Thailand Sporolactobacillus laevis, an anaerobic Gram-positive bacterium species in the genus Sporolactobacillus Stokesia laevis, a flowering plant species native to southeastern North America Symphonia laevis, a tropical woody plant species in the genus Symphonia Symplecta laevis, a crane fly species in the genus Symplecta
See also List of Latin and Greek words commonly used in systematic names#L