S47

S47 may refer to:
 * S47 (Berlin), a line of the Berlin S-Bahn
 * S47 (Long Island bus)
 * INS Shankul (S47), a submarine of the Indian Navy
 * S47: Keep at temperature not exceeding ... °C (to be specified by the manufacturer), a safety phrase
 * SABCA S.47, a Belgian fighter-bomber
 * Sulfur-47, an isotope of sulfur
 * USS S-47 (SS-158), a submarine of the United States Navy