Mendi is the capital of the Southern Highlands Province of Papua New Guinea.

Mendi may also refer to:

People

• The Mendi people of Sierra Leone, West Africa
  • The Mendi Bible, presented to John Quincy Adams by freed slaves from the Amistad
• Mendi Rodan (1929–2009), Israeli conductor, composer and violinist
• Mendi Msimang, treasurer of the African National Congress
• Mendi Mengjiqi (born 1958), Kosovar Albanian composer
• Mendi Obadike (born 1973), Igbo Nigerian American musician, poet and conceptual artist

Papua New Guinea places and languages

• Mendi language, also called Angal, spoken in Papua New Guinea and unrelated to the African people noted above
• Mendi Urban LLG, Papua New Guinea
• Lower Mendi Rural LLG, Papua New Guinea
• Upper Mendi Rural LLG, Papua New Guinea

Ships

• SS Mendi, a 1905 British steamship used as troop carrier by the Royal Navy, sunk in 1917
• SAS Mendi (F148), a frigate of the South African Navy, launched 2003
• Mendi (barque), a black-owned ship serving Liberia

Other

• Mendi, Ethiopia, a town
• Mehndi (or henna), used for body painting
• CD Mendi, a minor Spanish football club