Japanese counter, in the Japanese language, a word used with numbers to count objects

A countertop (flat surface or worktop, possibly in a kitchen, shop, or other service)

Measure word, in grammar and linguistics

Counter, a device or computer program for counting

Reckoning counter or jeton used on reckoning boards for calculations

Web counter, a counter that counts the number of visits to a web page

Counter (board wargames), a playing piece used in board wargames

Counter turn, an element in figure skating

Counter (collectible card games), a small item used to represent certain objects or conditions in a collectible card game

Counter (typography), an enclosed space in a letter-form

Compter, a small prison, often used for debtors, dissenters and other minor offenders

Counter (furniture), e.g. in shops

Counter to, contrary or opposed, (see Opposition (politics))