S99 may refer to:
- Avia S-99, a Czechoslovak fighter aircraft
- SAS Assegaai (S99), formerly SAS Joanna van der Merwe, a submarine of the South African Navy
- Sintura S99, a racing car
- Soviet submarine S-99, a submarine of the Soviet Navy
- S99, a refugee in Nauru
- S99, a line of the Lucerne S-Bahn
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
If an internal link led you here, you may wish to change the link to point directly to the intended article.
If an internal link led you here, you may wish to change the link to point directly to the intended article.