Jack Crevalle (wanda kuma aka sani da jack jack, black-tailed trevally, couvalli jack, ko yellow cavalli) wani nau'in kifin wasa ne da ake samu a bakin tekun Tekun Atlantika da Tekun Mexico. Kalmar "jack" tana nufin nau'in kifaye a cikin dangin Carangidae, wanda ya hada da wasu shahararrun kifaye irin su amberjack, pompano, da trevally. Kalmar "crevalle" an yi imanin ta samo asali ne daga kalmar Mutanen Espanya "crevallo," wanda ke nufin mackerel na doki. An san jack crvalle don ƙarfin yaƙi mai ƙarfi kuma sanannen manufa ce ga masu kallon wasan motsa jiki.