Flexibility may refer to:

• Flexibility, the ability of a material to deform elastically and return to its original shape when the applied stress is removed
• Flexibility (anatomy), the distance of motion of a joint, which may be increased by stretching
• Flexibility (engineering), in the field of engineering systems design, designs that can adapt when external changes occur
• Flexibility (personality), the range of different appropriate behavioural responses a person can make in situations that they face.
• Cognitive flexibility, the ability to switch between thinking about two different concepts, and to think about multiple concepts simultaneously
• Labour market flexibility
• "Flexibility", a song by Miss Kittin & The Hacker first published as the seventh song of their 2001 album First Album
• Flexibility (abstract algebra), a property of some non-associative algebras