Filament yarn can be classified by:
- FDY – Fully Drawn Yarn
 - POY – Pre-Oriented Yarn
 - DTY – Draw Textured Yarn
 
Filament Based On Orientation
i. Based on Texturing/Intermingling
- NIM – No Intermingling
 - SIM – Semi Intermingle
 - HIM – High Intermingle
 
ii. Based on Air Texturing/Intermingling
- ATY – Air Textured Yarn
 - ACY – Air Covered Yarn
 
iii. Based on Covering
- SCY – Single Covered Yarn
 - DCY – Double Covered Yarn
 
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