Johannae may refer to:

• Abacetus johannae, species of ground beetle
• Alvania johannae, species of sea snail
• Cinnyris johannae, species of bird
• Coregonus johannae, species of fish
• Doryfera johannae, species of species of hummingbird
• Flexiseps johannae, species of skink
• Frea johannae, species of beetle
• Gluconacetobacter johannae, species of bacteria
• Odites johannae, species of moth
• Pampusana beccarii, species of bird
• Rasbora johannae, species of fish
• Tangara johannae, species of bird