Curl or CURL may refer to:

• Curl (mathematics), a vector operator that shows a vector field's rate of rotation
• Curl (programming language), an object-oriented programming language designed for interactive Web content
• cURL, a program and application library for transferring data with URLs
• Antonov An-26, an aircraft, NATO reporting name CURL

• Curl (association football), is spin on the ball, which will make it swerve when kicked
• Curl, in the sport of curling, the curved path a stone makes on the ice or the act of playing; see Glossary of curling
• Biceps curl, a weight training exercise
• Leg curl, a weight training exercise
• Wrist curl, a weight training exercise

• Curl (Japanese snack), a brand of corn puffs
• Curl or ringlet, a lock of hair that grows in a curved, rather than straight, direction
• Consortium of University Research Libraries, an association of UK academic and research libraries
• Executive curl, the ring above a naval officer's gold lace or braid rank insignia

• Britta Curl (born 2000), American ice hockey player
• Kamren Curl (born 1999), American football player
• Martina Gangle Curl (1906–1994), American artist and activist
• Robert Curl (1933–2022), Nobel Laureate and emeritus professor of chemistry at Rice University
• Rod Curl (born 1943), American professional golfer
• Phil Curls (1942–2007), American politician
• Catarina Miranda (born 1990), Portuguese musician with the stage name Emma Curl

• Curling (disambiguation)
• Overlap (disambiguation)
• Spiral