Binary numeral system, a representation for numbers using only two digits (usually, 0 and 1)

Binary prefix, indicating magnitude multipliers in a base-two number system (e.g., kilo-, kibi-, etc.)

Binary star, a star system with two stars in it

Binary (comics), a superheroine in the Marvel Universe

Binary-coded decimal, a method for encoding for decimal digits in binary sequences

Binary tree, a computer tree data structure in which each node has at most two children

Binary data, composed of something other than human-readable text

Binary bet, a bet on a proposition which is quoted as a spread bet

Binary option, also known as digital option OR all-or-nothing option

Binary function, a function in mathematics that takes two arguments

Binary form, a way of structuring a piece of music

Binary fission, the splitting of a single-celled organism into two daughter cells

Finger binary, a system for counting in binary numbers on the fingers of human hands

Binary (novel), a 1972 novel by Michael Crichton (writing as John Lange)

Binary compound, a chemical compound containing two different chemical elements

Binary (chemical weapon), containing two chemicals that when combined make a toxic agent

Binary asteroid, two asteroids orbiting each other

Binomial (disambiguation)

Binary explosive, an explosive made of two components that become explosive when mixed.