Z
- Zenair, Zenair Ltd – Canada, (1974–present)
- Zenith (1), Zenith Aircraft Company – United States
- Zenith (2), Zenith Aircraft Corporation – United States, (1927–?)
- Zero, Zero Gravity Paragliders – South Korea, (2002–2008)
- Zlin, Moravan Aeroplanes Inc – Czech Republic
- Zlin, Moravan a.s. – Czech Republic
- Zlin, Moravan Národní Podnik – Czech Republic
- Zlin, Zlinská Letecká a.s. – Czech Republic
- Zlin, Zlin Aircraft a.s. – Czech Republic
- Zlin Aviation, Zlin Aviation s.r.o. – Czech Republic
- Zivko, Zivko Aeronautics Inc – United States
- Zmaj, Fabrica Aeroplana I Hydroplana Zmaj – Yugoslavia