Business
* Fortis (Swiss watchmaker), a Swiss watch company * Fortis Films, an American film and television production company founded by actress and producer Sandra Bullock * Fortis Healthcare, a chain of hospitals in India * Fortis Inc., a Canadian utility holding company * Fortis Group, a defunct banking, financial services, and insurance company, based in the Benelux or their successors: **People
* Alberto Fortis (1741–1803), Venetian writer, naturalist and cartographer * Alberto Fortis (musician) (born 1955), Italian singer and songwriter * Alessandro Fortis (1842–1909), Italian politician and prime minister * Jean-Baptiste-Boniface de Fortis (1746–1836), French politician * Louis Fortis (born 1947), American politician * Luigi Fortis (1748–1829), Italian Jesuit *Other
* Fortis (aerojeep), a propelled ground vehicle * Fortis (linguistics), consonants produced with greater energy than ''lenis'' ones * Mitsubishi Galant Fortis, a compact car also known as the Mitsubishi Lancer * Fortis CollegeSee also
* Aqua fortis {{disambiguation, surname