The Medal of St. Hallvard (Norwegian: St. Hallvardsmedaljen) is the highest award of the City of Oslo, Norway. It is awarded to people who have made a particularly noteworthy contribution to the City of Oslo. It is named after the city's patron, Saint Hallvard (ca. 1020–1043). The medal was designed by goldsmith (1886–1962) of the jewelry firm J. Tostrup in Oslo. It has been awarded since 1956.