L. americanus

L. americanus may refer to:
 * Lathyrus americanus, a vine species in the genus Lathyrus
 * Leptoconops americanus, a midge species in the genus Leptoconops
 * Leptodus americanus, a brachiopod species in the genus Leptodus
 * Lepus americanus, a hare species
 * Lethocerus americanus, a toe-biter species
 * Lophius americanus, a fish species
 * Lotagnostus americanus, a trilobite species
 * Lycopus americanus, a wildflower species
 * Lysichiton americanus, a cabbage species