Dreier

Dreier is German for "three-er" and may refer to:


 * Dreier (coin), an historical German coin
 * Dreier (Königrufen), a contract in the Tarot game of Königrufen
 * Dreier (surname), people with the surname
 * Dreier (Tapp Tarock), a contract in the Tarot game of Tapp Tarock