Clasp, clasper or CLASP may refer to:

• Wrist clasp, a dressing accessory
• Folding clasp, a device used to close a watch strap
• Medal bar, an element in military decoration
• Fastener, a hardware device that mechanically joins objects together
• CLASP (British Rail), a prefabricated building system
• "Clasp", a song by Jethro Tull from The Broadsword and the Beast
• Clasp, a Common Lisp implementation
• Clasper, an anatomical structure in male cartilaginous fish
• Clasper (mathematics), a surface (with extra structure) in a 3-manifold on which surgery can be performed
• Grasp, holding or seizing firmly with (or as if with) the hand

Acronyms and initialisms[edit]

• Center for Law and Social Policy, an American organization, based Washington, D.C., that advocates for policies aimed at improving the lives of low-income people
• CLASP1 and CLASP2, cytoplasmic linker associated proteins
• Classic ASP, a nostalgic term for Active Server Pages in computing
• Collaborative Labeling and Appliance Standards Program (CLASP), an international nonprofit organization
• Consortium of Local Authorities Special Programme, an association in England for the development of prefabricated school buildings