H. americanus

H. americanus may refer to:
 * Habronattus americanus, a spider species
 * Halictophagus americanus, a strepsipteran species
 * Heliocarpus americanus, a tree species
 * Hemitripterus americanus, a fish species
 * Homarus americanus, a lobster species
 * Humulus americanus, a flowering plant species