The top 10 most dangerous ultras organisations have been identified, and some of them have established themselves as having a reputation for being very violent.
A significant number of football fans all around the world are extremely enthusiastic about their club; yet, there are others who go beyond the call of duty and are frequently referred to as “ultras.”
The word “ultras” is typically used to refer to a group of a team’s most vociferous fans, who typically congregate in a certain section of the stadium while the club is playing.
There are a number of clubs in Europe and South America that are usually recognised with having structured ultra groups, although the culture of ultra groups is not as prevalent in the British professional game.
However, which teams are considered to be the most prestigious in the world of football?
There are specific groups that are frequently cited, however this is something that is dependent on the individual’s lived experience or the person you question.
The Torcida Split is the Hajduk Split.
One thing that Everton supporters discovered in 2017 was that the Torcida Split group is not to be taken lightly.
The match was stopped in the 33rd minute of the first leg of the Europa League play-offs that took place at Goodison Park in 2017. This was due to the fact that fans of Hajduk rushed onto the pitch and threw items at the supporters of the Toffees.
In consequence of this, the Croatian club was given a fine of £35,348.
The organisation was established in the 1950s by a group of students who were inspired to start the club after witnessing the fervent crowds that were present during the World Cup in Brazil in 1950.
Even though they have branches all over the world, the majority of its headquarters are located in Croatia. This organisation is one of the oldest in the world of association football.
Dinamo Zagreb, sometimes known as the Boy Blues
When it was established in 1986, the club has its headquarters in the city that serves as the capital of Croatia.
Following Croatia’s independence from Yugoslavia in 1990, the BBB was a significant backer of Franjo Tudman, who was the country’s first president at the time.
On the other hand, their support did not survive for very long because the previous president made an attempt to alter the name of the club to NK Croatia, which was met with disapproval from the organisation.
In addition to Panathinaikos, Dynamo Kyiv, Dinamo Tbilisi, and the ultras of AS Roma, the BBB has strong relationships with a number of other organisations located around Europe.
Dinamo Zagreb, sometimes known as the Boy Blues
When it was established in 1986, the club has its headquarters in the city that serves as the capital of Croatia.
Following Croatia’s independence from Yugoslavia in 1990, the BBB was a significant backer of Franjo Tudman, who was the country’s first president at the time.
On the other hand, their support did not survive for very long because the previous president made an attempt to alter the name of the club to NK Croatia, which was met with disapproval from the organisation.
In addition to Panathinaikos, Dynamo Kyiv, Dinamo Tbilisi, and the ultras of AS Roma, the BBB has strong relationships with a number of other organisations located around Europe.
Green monsters are known as Ferencvaros.
In addition to being one of the most feared groups on the list, the Green Monsters also have a fierce competition with the extreme group of Újpest, which is also a club from Budapest.
They even boycotted games back in 2015 when the Hungarian FA tried to implement a palm print system to identify fans who attended matches before the decision was overturned.
River Plate – Los Borrachos Del Tablón
One of the most well-known ultras in South America is River Plate, which is located in Argentina. The club and their ultra group boast a fierce rivalry with their Buenos Aires-based rivals Boca Juniors, with clashes often seen when the two side’s meet.
Back in 2018, the group were even accused of attacking Boca’s team bus, as per reports from BBC Sport.
Several Boca players were injured when their team bus was attacked when travelling to River’s Estadio Monumental.
The city’s mayor at the time explained how the incident was an act of revenge after the police raided the home of the group’s leader.
Lazio, the S.S. Lazio, Irriducibili
The Rome-based club are associated with a violent ultra group that are feared around Italy and the rest of Europe.
And the Irriducibili are never far from trouble, as Real Sociedad fans experienced in January 2025 ahead of the clubs’ Europa League tie.
Nine Sociedad fans were injured after violent attacks in central Rome ahead of the fixture.
As reported by The Guardian, around 80 members of the Lazio ultras group turned up armed with chains, knives and hammers before attacking the away fans in an incident the city’s mayor, Roberto Gualtieri, described as “shameful”.
St Pauli – Ultra Sankt Pauli
The German club are known for an ultras group that differs from the others on the list. Ultra Saink Pauli has an anti-discrimination stance and was one of the first teams to support anti-racism, anti-fascism, anti-homophobia and general anti-discrimination campaigns.
However, they still create a hostile atmosphere at the club’s Millerntor-Stadion.
Red Star Belgrade – Delije
The Serbian side’s ultras group was first formed in the 1940s but was named in 1989. The Delije are known for their nationalist views and boast ties with Olympiacos and Spartak Moscow due to their shared Orthodox faith.
Back in 1990, the group clashed with Dinamo Zagreb’s BBB ultras when tensions were at their peak in Yugoslavia.
While the incident was not officially the catalyst for ‘war’ the fixture has since been known as the ‘match which started a war’.
Galatasaray S.K – ultrAslan
Turkish fans are known for being vocal with their support of their teams, and Galatasaray are no different. However, their ultra group the ultrAslan have made a name for themselves mainly for the wrong reasons.
The ultrAslan was founded in 2001 and are known for their pyrotechnic displays – although the Turkish FA have tried to stamp this out with fines for those involved.
The group are not associated with politics but are still one of the most feared in Europe.
In 2023, the club were fined £44,420 after thousands of supporters gained access to the home section of Old Trafford during Gala’s Champions League fixture against Manchester United.
The English club were forced to issue an apology after several of their supporters “felt unsafe
S.S.C Napoli – multiple groups
The Italian side are unique in many ways but, like the other club’s mentioned, are associated with a dangerous ultra group.
The Napoli supporters have several ultra groups – notably Commando Ultras Curva B, ultras Napoli, and Fedayn.
The factions all add to the atmosphere at the Diego Armando Maradona and are often seen with pyrotechnics.
However, they have also been known to attack away supporters with reports of weapons being used on several occasions.
Back in 2010, Napoli faced Liverpool in Naples in the Europa League – but the game was overshadowed when three Liverpool fans had to be treated in hospital for stab wounds.
Olympique de Marseille – Commando Ultra 84
Marseille are one the most supported clubs in France and boast a rich history. And like many other European sides are associated with a dangerous ultras group.
Commando Ultras 84 was formed in 1984 and are well known for making a hostile atmosphere at every home game at the club’s Velodrome stadium.
Fixtures against PSG often are often marred by clashes between the clubs’ ultras with the Paris side being associated with the Boulogne Boys.
Lazio, the S.S. Lazio, Irriducibili
The Rome-based club are associated with a violent ultra group that are feared around Italy and the rest of Europe.
And the Irriducibili are never far from trouble, as Real Sociedad fans experienced in January 2025 ahead of the clubs’ Europa League tie.
Nine Sociedad fans were injured after violent attacks in central Rome ahead of the fixture.
As reported by The Guardian, around 80 members of the Lazio ultras group turned up armed with chains, knives and hammers before attacking the away fans in an incident the city’s mayor, Roberto Gualtieri, described as “shameful”.
St Pauli – Ultra Sankt Pauli
The German club are known for an ultras group that differs from the others on the list. Ultra Saink Pauli has an anti-discrimination stance and was one of the first teams to support anti-racism, anti-fascism, anti-homophobia and general anti-discrimination campaigns.
However, they still create a hostile atmosphere at the club’s Millerntor-Stadion.
Red Star Belgrade – Delije
The Serbian side’s ultras group was first formed in the 1940s but was named in 1989. The Delije are known for their nationalist views and boast ties with Olympiacos and Spartak Moscow due to their shared Orthodox faith.
Back in 1990, the group clashed with Dinamo Zagreb’s BBB ultras when tensions were at their peak in Yugoslavia.
While the incident was not officially the catalyst for ‘war’ the fixture has since been known as the ‘match which started a war’.
Galatasaray S.K – ultrAslan
Turkish fans are known for being vocal with their support of their teams, and Galatasaray are no different. However, their ultra group the ultrAslan have made a name for themselves mainly for the wrong reasons.
The ultrAslan was founded in 2001 and are known for their pyrotechnic displays – although the Turkish FA have tried to stamp this out with fines for those involved.
The group are not associated with politics but are still one of the most feared in Europe.
In 2023, the club were fined £44,420 after thousands of supporters gained access to the home section of Old Trafford during Gala’s Champions League fixture against Manchester United.
The English club were forced to issue an apology after several of their supporters “felt unsafe
S.S.C Napoli – multiple groups
The Italian side are unique in many ways but, like the other club’s mentioned, are associated with a dangerous ultra group.
The Napoli supporters have several ultra groups – notably Commando Ultras Curva B, ultras Napoli, and Fedayn.
The factions all add to the atmosphere at the Diego Armando Maradona and are often seen with pyrotechnics.
However, they have also been known to attack away supporters with reports of weapons being used on several occasions.
Back in 2010, Napoli faced Liverpool in Naples in the Europa League – but the game was overshadowed when three Liverpool fans had to be treated in hospital for stab wounds.
Olympique de Marseille – Commando Ultra 84
Marseille are one the most supported clubs in France and boast a rich history. And like many other European sides are associated with a dangerous ultras group.
Commando Ultras 84 was formed in 1984 and are well known for making a hostile atmosphere at every home game at the club’s Velodrome stadium.
Fixtures against PSG often are often marred by clashes between the clubs’ ultras with the Paris side being associated with the Boulogne Boys.
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