Koss

Koss can refer to:

Koss Corporation, a United States company that designs and manufactures headphones
Johann Olav Koss, the Norwegian Olympic speed-skater and official
Koss (album), an album by Paul Kossoff
Koss (Star Trek), a character of Star Trek: Enterprise who was married to T'Pol
Koss Porta Pro, a stereo headset made by Koss Corporation