Jernas may refer to:
MV Jernas, a Bahraini vessel shipwrecked off of Dhofar Governorate, Oman Jernas, an export version of the Rapier 2000 missile JERNAS-M, an Emirati unmanned aerial vehicle JERNAS-S, an Emirati unmanned aerial vehicle Elsa Jernås (1895–1979), a Swedish graphic artist, painter and costume designer