Tulsi or Ocimum tenuiflorum, commonly known as holy basil, is an aromatic perennial plant.

Tulsi may also refer to:

• Tulsi (name), a given name and surname
  • Tulsidas (1532–1623), Indian saint and poet
• Tulsi (film), a 2008 Indian film
• Tulsi Comics, a defunct Indian comics publisher
• Tulsi Express, an Indian Railways train
• Tulsi Lake, a lake in Mumbai, India

• All pages with titles containing Tulsi
• Thulasi (disambiguation)
• Tulasi in Hinduism
• Tulasi Vivaha, a Hindu ritual