Flexal virus or FLEV (and previously known by the laboratory code BeAn 293022) is a mammarenavirus: an arenavirus with a mammalian host. It was first found in semiaquatic rodents of the genus Oryzomys in tropical forest in the Pará area of Brazil.
It is a member of Clade A of the Tacaribe (or "New World") serocomplex of the family Arenaviridae. Laboratory workers infected by Flexal virus have exhibited febrile illness. Flexal virus is listed as a UN 2814 Category A infectious substance.