One year before, Hammarby had merged with Klara SK that provided a big supplement of talented players to the team.

In the first year of bandy league system in Sweden, 1930–31, Hammarby entered in Division 1 Norra together with AIK, IF Vesta, IFK Rättvik, IK Sirius, Skutskärs IF, SK Tirfing, and Västerås SK and finished 8th.

[1] In 1957, Hammarby reached their first Swedish championship final, but lost 1–2 to Örebro SK at Stockholms stadion.

Hammarby has been crowned World Champions three times: beating Ljusdals BK 7–0 in 1999, Sandvikens AIK 2–1 in 2001 and Zorky Krasnogorsk 6–2 in 2009.

Hammarby IF won their first national championship title in 2009–10 after beating Bollnäs GoIF in the final match at Studenternas IP.

They also won the gold medal in 2013, beating Sandviken, as the final for the first time was played indoors at Friends Arena, that drew a record crowd of 38,474.