RIN

RIN may refer to:


 * RIN (rapper), Renato Šimunović (born 1994), German-Croatian rapper
 * Rassemblement pour l'Indépendance Nationale, a former Quebec nationalist group
 * Regulation Identifier Number, a unique 8-digit alphanumeric code assigned to regulations under development in the United States.
 * Relative Intensity Noise, a noise term in fiber-optic communication
 * Renewable Identification Number, a serial number assigned to a batch of biofuel for the purpose of tracking
 * RNA integrity number, a method of assessing RNA quality for biochemical applications
 * Royal Indian Navy, the naval force of British India
 * Royal Institute of Navigation, a learned society for Navigation.