Fights, assaults, riots and one incident of sexual molestation were reported after a football match in Stockholm.
More than two dozen football supporters attacked police after a home game in Norrköping.
Sweden has banned fans from covering their faces at sporting venues to clamp down on violence by masked hooligans, while allowing exceptions for religious reasons.
Security must be stepped up at football stadiums across Sweden after former international Henrik Larsson and his son were targeted by angry fans, the government has said.
Swedish football coach Henrik Larsson has said he may be concerned for his safety after hooligans attacked his son on the pitch when their team was relegated from the top flight.
Swedish football fans stormed the pitch on Sunday night after IFK Gothenburg beat Djurgården in the Swedish Cup final, in a violent victory march that saw at least one flare hurled into the crowd and that required police intervention.
The Swedish Data Inspection Board (Datainspektionen) has given the government thumbs up to start a register of blacklisted sports supporters, as long as a few changes are made to the scheme in order to safeguard personal integrity.
Several clashes between supporters of Stockholm football team AIK and Polish team Lech Poznan were reported on Thursday evening in the capital after the Swedish side beat the Poles 3-0 in a European league qualifier.
On Tuesday the national coordinator for sports related crime, Björn Eriksson, slammed the Riksdag’s proposal that known hooligans should report to authorities prior to major sporting events, in an opinion piece in national newspaper Dagens Nyheter (DN).
A hotly contested Allsvenskan football match between Malmö FF and Stockholm's Djurgården was terminated after only 12 minutes of play Saturday afternoon after several fireworks were thrown onto the pitch.
The Swedish Football Association (Svenska fotbollsförbundet) has ordered Stockholm-based club AIK to pay a fine of 150,000 kronor ($24,500) for an incident in which a referee was hit by a firework thrown from stands, forcing the match to be abandoned.
The Allsvenskan football premiere kicks off this weekend and Swedish police say they want more officers to report what they call "risky fans".
Five Swedish football supporters were forced to leave a plane at Malmö Airport on Sunday with a further seven suspected of air traffic sabotage after threatening crew and beating up a fellow passenger.
Fighting broke out between rival Danish, Swedish and Dutch hooligans at a pub in central Helsingborg on Thursday evening.
Monday night's Stockholm football derby between Djurgården and Hammarby was abandoned after both sets of fans disgraced themselves at Söder stadium.