10 Countries Where Underground Fighting Is Thriving
Underground fighting is a global phenomenon, but it does not thrive equally everywhere. Legal frameworks, cultural traditions, economic conditions, and the presence of charismatic promoters all determine whether a country develops a serious underground scene or remains limited to occasional backyard scraps.
These 10 countries have the most active, organized, and culturally significant underground fighting scenes in the world as of 2026.
1. United States
Key Organizations: Streetbeefs, BKFC, Rough N Rowdy, Dawg Pound, Backyard Brawlz Scene Size: Massive -- the largest audience for underground fighting content globally
The United States dominates underground fighting in sheer volume. Streetbeefs alone has over 4 million YouTube subscribers and more than a billion views. BKFC has transformed from a startup into a major promotion with events in arenas seating 10,000-plus.
The American scene benefits from several factors: the First Amendment protects fight content distribution, YouTube's algorithm favors English-language content, and a deep cultural tradition of informal fighting -- from frontier boxing to Toughman contests -- provides fertile ground.
The legal landscape varies dramatically by state. Some states have sanctioned bare-knuckle boxing, while others maintain ambiguous laws that backyard promotions exploit. The result is a patchwork scene ranging from fully legal BKFC events to genuinely underground operations in states with stricter athletic commission oversight.
2. Russia
Key Organizations: Strelka (YouTube), Top Dog (YouTube), Fight Street, Street Wars Scene Size: Enormous -- second only to the US in content production
Russia's underground fighting scene is arguably the most distinctive in the world. Strelka's sand circle format -- two fighters, bare-knuckle, in a ring of sand surrounded by spectators -- became one of the most recognizable images in combat sports media.
The Russian scene thrives because of cultural factors that run deep. Russia has a long tradition of wall-on-wall fistfighting (stenka na stenku), dating back centuries. Physical toughness is culturally valorized. The country's MMA infrastructure is world-class, producing UFC champions, which creates a pipeline of trained fighters willing to compete in unsanctioned settings.
Top Dog has pushed the format further with hay bale rings and higher production values, while dozens of Strelka imitators continue to produce content across the country. Russian underground fight content regularly achieves tens of millions of views.
3. United Kingdom
Key Organizations: BKB, UBKB, Spartan BK, Bare Fist Boxing Scene Size: Large -- the epicenter of European bare-knuckle culture
The UK has the longest continuous tradition of organized bare-knuckle fighting in the Western world. From the Prize Ring era of the 18th and 19th centuries through the Traveller community's maintained traditions, bare-knuckle boxing has never truly disappeared from British culture.
Today, multiple promotions operate across England, Wales, Scotland, and Northern Ireland. BKB has achieved a level of legitimacy with televised events, while smaller operations continue in working men's clubs and hired halls. The Traveller community's fighting tradition -- documented in films like Knuckle -- remains a powerful cultural force.
The UK's relatively permissive approach to combat sports events, combined with a massive boxing fan base and deep pub-fighting culture, makes it one of the most fertile environments for underground fighting anywhere in the world.
4. Ukraine
Key Organizations: Mahatch, various informal promotions Scene Size: Disrupted by conflict but historically significant
Before Russia's 2022 invasion, Ukraine had developed one of Eastern Europe's most active underground fighting scenes. Mahatch, based in Kyiv, was the most visible promotion, staging bare-knuckle and MMA fights in basement venues and building a substantial YouTube following.
The war has scattered Ukraine's underground fighting community. Many fighters joined the military. Some relocated to Poland, Germany, and other European countries, carrying the scene's culture with them. Ukrainian fighters have appeared in Polish and Scandinavian underground promotions since 2022.
Despite the disruption, informal fighting events have continued in western Ukrainian cities throughout the conflict, demonstrating the scene's resilience. The post-war reconstruction period will likely see a resurgence.
5. Brazil
Key Organizations: Favela Fight Club, various informal promotions Scene Size: Large but poorly documented in English
Brazil's underground fighting scene is massive but largely invisible to English-speaking audiences. Informal fighting events occur in favelas, on beaches, in gyms, and in rented spaces across the country. The Brazilian tradition of vale tudo -- "anything goes" -- predates modern MMA and continues in unsanctioned settings.
The country's extraordinary depth of martial arts talent means that even underground fighters may have serious BJJ, Muay Thai, or capoeira training. Some of Brazil's most famous MMA fighters, including early UFC competitors, came from vale tudo backgrounds that were essentially underground fighting.
Content from Brazilian underground fights circulates primarily on Portuguese-language social media, WhatsApp groups, and YouTube channels that rarely cross over to English-speaking audiences.
6. Nigeria
Key Organizations: Lagos Fight Nights, informal circuits Scene Size: Growing rapidly with increasing digital access
West Africa's underground fighting scene centers on Nigeria, particularly Lagos. Informal boxing events have operated in neighborhoods like Surulere and Mushin for decades, but increasing smartphone penetration and social media access have begun to amplify the scene's visibility.
Nigerian underground fighting is primarily boxing-based, reflecting the country's strong boxing tradition that has produced world champions. Fighters compete for cash prizes in events organized by local promoters, often in open-air venues. The economic incentive is significant -- prize money that seems modest by Western standards can represent weeks of earnings.
As African internet connectivity continues to improve, Nigerian underground fighting content is beginning to reach global audiences, suggesting that the scene's influence will grow substantially in coming years.
7. Myanmar
Key Organizations: Underground lethwei circuits, village fighting events Scene Size: Significant but concentrated in rural areas
Myanmar's underground fighting scene is inseparable from its national sport of lethwei -- bare-knuckle fighting with headbutts, fought to the knockout. While sanctioned lethwei promotions exist, an extensive underground circuit operates in rural villages where traditional rules are observed.
These fights carry cultural and religious significance beyond mere sport. They are tied to festivals, local disputes, and community identity. Foreign fighters who participate in village lethwei events report an intensity and authenticity that no sanctioned promotion can replicate.
The political instability following the 2021 coup has complicated the sanctioned lethwei scene, pushing more activity into unsanctioned settings and blurring the line between official and underground.
8. Thailand
Key Organizations: Fight Circus, informal Muay Thai events Scene Size: Moderate but unique in character
Thailand's relationship with underground fighting is complicated by the fact that Muay Thai is essentially the national sport, with sanctioned fights occurring daily across the country. The "underground" scene in Thailand tends to involve either spectacle fighting (Fight Circus in Pattaya) or informal gambling-driven fights in rural areas.
Fight Circus has carved a unique niche with its deliberately absurd matchmaking and carnival atmosphere, attracting international attention for fights that no athletic commission would sanction. Meanwhile, village Muay Thai events -- while technically legal -- often feature children and operate outside any meaningful regulatory oversight.
Thailand also serves as a training destination for underground fighters from other countries, with numerous gyms catering to foreign fighters preparing for unsanctioned bouts elsewhere.
9. Poland
Key Organizations: Combat Zone, Street Kombat, various informal promotions Scene Size: Rapidly growing
Poland's legitimate MMA scene -- anchored by KSW, one of Europe's largest promotions -- has created a massive pool of trained fighters, many of whom cannot secure spots on official cards. This surplus of talent feeds a growing underground scene where fighters compete in unsanctioned events to gain experience and earn money.
Polish underground fighting also draws from the country's football hooligan culture, which has a long tradition of organized fighting between rival firms. The intersection of hooligan culture and MMA has produced a distinctive underground scene that is more technically skilled than most.
The influx of Ukrainian fighters since 2022 has added depth to the Polish scene, creating cross-cultural matchups that draw significant interest.
10. Denmark
Key Organizations: UUF Denmark, informal bare-knuckle events Scene Size: Small but disproportionately influential
Denmark punches above its weight in underground fighting relative to its population of under 6 million. UUF Denmark has built a following in the Copenhagen area, and the country's proximity to KOTS in Sweden means Danish fighters regularly participate in Scandinavian underground events.
The Danish scene benefits from a relatively relaxed legal environment regarding combat sports and a strong gym culture that produces trained fighters. The country's small size means the scene is tight-knit, with most active fighters knowing each other personally.
Denmark's influence on the broader European underground scene exceeds what its size would suggest, particularly through fighters who compete across Scandinavian promotions.
Honorable Mentions
Several countries narrowly missed this list. Japan has an underground fighting tradition tied to its yakuza culture and shoot wrestling history. South Africa has developing bare-knuckle and MMA scenes. Mexico has extensive informal boxing circuits. Germany has seen growth in underground MMA tied to immigrant communities. Australia's outback boxing tent tradition continues in modified forms.
The underground fighting world is expanding, not contracting. As combat sports media grows and platforms make distribution easier, expect more countries to develop organized scenes in the coming years.
For a look at the organizations driving these scenes, see our Top 10 Underground Fighting Organizations ranking. For obscure promotions in these countries and beyond, check out 25 Underground Fighting Organizations You've Never Heard Of.