Rb 74

Rb 74, RB 74, Rb-74 or Rb.74 may refer to:


 * Rubidium-74, an isotope of rubidium
 * The Swedish designation for the AIM-9L Sidewinder air-to-air missile
 * The Swedish designation for the AIM-9M Sidewinder air-to-air missile
 * Service designation for the Senne Railway
 * A regional railway route in Bavaria
 * A regional railway route in Baden-Württemberg
 * A regional railway route in Berlin and Brandenburg
 * BAE Wolf, a tugboat in the Ecuadorian Navy