Preform may refer to:

• Optical fiber#Preform, a piece of glass used to draw an optical fiber
• Lithic reduction#Blanks and preforms, an incomplete and unused basic form of a stone tool
• Solder#Preform, a specially designed shape of solder
• Brazing#Preform, a high quality, precision metal stamping used for a variety of joining applications

• The Kulyna language (disambiguation)
• The Kundby case
• The Kung Fu Colt Master
• The Kung-Fu Kid (1994 film)
• The Kung Sheung Daily News
• The Kung Sheung Daily Press
• The Kung Sheung Evening Press
• The Kunlun Slave
• The Kural
• The Kuzuzangpo Album
• The KUZUZANGPO Album
• The KUZUZANGPO Tour
• The Kuzuzangpo Tour
• The KVB
• The Kwame Nkrumah University of Science and Technology
• The Kwannon of Okadera
• The K-word
• The K word
• The Kyle Gass Band
• The Kylie Jenner Effect
• The Kylie Tapes: 94-98
• The Kynoch Press
• The Kyogle examiner
• The Kyogle Examiner
• The Kyoshi Novels