Spool

Spool may refer to:

• Spool (aeronautics), part of a jet engine
• Spool (record label), active 1998–2008
• Spool (software company), a social bookmarking company
• Bobbin, on which thread, yarn or wire is wound
• Cable reel, used to carry various types of electrical wires
• Emma Spool, a fictional character in the film Psycho II
• Jared Spool (born 1960), American tech writer
• Spooling, a form of multi-programming
• Spool pin, used in pin tumbler locks
• Winch
• Spool, a type of locking differential