Haiti – Wikipedia

Etymology. The name Haiti (or Hayti) comes from the indigenous Taíno language which was the native name given to the entire island of Hispaniola to mean, “land of high mountains.” The h is silent in French and the ï in Haïti has a diacritical mark used to show that the second vowel is pronounced separately, as in the word naïve. In English, this rule for the pronunciation is often …

: https://en.wikipedia.org/wiki/Haiti