From FF wiki FF III article: "The Evoker (幻術師, Genjutsushi, lit. "Illusionist"), also known as Conjurer,". There is also Arcanist in Tactics A2, but it lacks the Japanese reading. Official XIV site lists Conjurer and Arcanist as 幻術士 and 巴術士 respectively.

Fun fact: If you put the Japanese Arcanist name into google translate and translate from Chinese, you get Pakistan Warlock.