A rib is a bone attached to the spine, in vertebrate animals.

Rib, ribs or RIB may also refer to:

Anatomy

• Rib or costa, the leading edge of an insect wing (see Glossary of entomology terms)

• Rib, an angulated vertical line on the stem of cactus

Construction

• Rib (aeronautics), internal parts of an aircraft wing

• Rib (nautical), a structural member of a vessel

• Rib, separating panels of an architectural rib vault

• The sides of a violin or a guitar

Acronyms

• Rigid inflatable boat (RIB)

• Routing information base in computer networking

• RIB Software, a German company

• Retirement Insurance Benefits of the US Social Security Administration

• Rwanda Investigation Bureau, law enforcement

• Renault Industrie Belgique

• Compaq Remote Insight Board expansion card, later HP Integrated Lights-Out

Music

• R.I.B. (album), 2014, by German metal band Tankard

• Ribs (band) an American space rock/grime band

• "Ribs" (song), 2013, by Lorde

Other uses

• Ribs (food), the cooked meat and rib bones of a food animal

• Rib (professional wrestling), a practical joke

• A type of escarpment seen in rib and groove topography

• Ribbing, a knitting stitch pattern

• Ribs (recordings), gramophone recordings made from X-ray films

• Ribs Raney (1923–2003), American baseball pitcher nicknamed "Ribs"