ZL

ZL may refer to:

Aviation

• Hazelton Airlines (1953–2001; IATA: ZL)
• Rex Airlines (founded 2002; IATA: ZL)
• ZL, an unused aircraft registration prefix for New Zealand

Science, technology and mathematics

• ZL, ITU prefix for New Zealand, in radio and television
• Zorn's lemma, a proposition in set theory
• ZL, a Mazda Z5 engine variant

Other uses

• Polish zloty (sign: zł), the currency of Poland
• z"l, a Jewish honorific for the dead
• ZL, a fictional assistant to superhero Masked Marvel (Centaur Publications)