Osiris Maia

UFC referee · active in the loaded archive 2014–2025. 57 archived assignments, 1 title fight.

57Archived assignments

1Title fights

2Five-round

59.6%Stoppage rate

38.6%Decision rate

9:55Avg fight time

Archive biography

Osiris Maia

Osiris Maia appears as the assigned referee in 57 archived UFC bouts currently loaded by PropBetEdge (historical coverage is still being backfilled, so this is not a career total) across 2014–2025. This profile treats officiating as context, not destiny: the rates below describe what happened in that historical sample and do not prove that the referee caused a finish, decision, pace change or judging outcome.

No externally sourced biography passed the identity check for this official, so the summary above is generated from our own archive rows only.

Notable assignments

Title fights, five-round bouts and main events in this referee's loaded archive, linked to the matchup pages.

Main event · WelterweightVicente Luque vs Joel ÁlvarezUFC Fight Night: Oliveira vs. Gamrot · Oct 11, 2025Unanimous Decision · R3 · 5:00 · Joel Álvarez won Five rounds · MiddleweightDerek Brunson vs Lyoto MachidaUFC Fight Night: Brunson vs. Machida · Oct 28, 2017KO/TKO · R1 · 2:30 · Derek Brunson won Title fight · BantamweightReginaldo Vieira vs Dileno LopesUFC 190: Rousey vs Correia · Aug 1, 2015Unanimous Decision · R3 · 5:00 · Reginaldo Vieira won

Recent assignments

The newest referee-tagged results currently present in the PropBetEdge UFC archive.

Oct 11, 2025Jafel Filho vs Clayton CarpenterUFC Fight Night: Oliveira vs. GamrotSubmission · R1 · 4:42 Oct 11, 2025Vicente Luque vs Joel ÁlvarezUFC Fight Night: Oliveira vs. GamrotUnanimous Decision · R3 · 5:00 May 4, 2024Anthony Smith vs Vitor PetrinoUFC 301: Pantoja vs. ErcegSubmission · R1 · 2:00 May 4, 2024Iasmin Lucindo vs Karolina KowalkiewiczUFC 301: Pantoja vs. ErcegUnanimous Decision · R3 · 5:00 May 4, 2024Mauricio Ruffy vs Jamie MullarkeyUFC 301: Pantoja vs. ErcegKO/TKO · R1 · 4:42 Nov 4, 2023Elves Brener vs Kaynan KruschewskyUFC Fight Night: Almeida vs. LewisKO/TKO · R1 · 4:01

Profile details

Structured facts from the loaded archive and, where attached, a verified source. Unavailable facts are omitted rather than guessed.

Full name: Osiris Maia
Role: Mixed martial arts referee
Documented tenure: Documented UFC assignments 2014–2025
Status: Active in the loaded archive
Archive tenure: 2014–2025 · first loaded bout May 31, 2014
Most recent bout: Oct 11, 2025
Archived assignments: 57 in the loaded archive — not a career total; historical coverage is still being backfilled
Title fights: 1
Outcomes: 18 KO/TKO · 16 submissions · 22 decisions (2 split) · 1 NC/draws
Average stoppage: 6:29
Photo: No freely licensed portrait found in approved sources (1 candidate rejected on license or identity).

Related events

Cards this referee worked in the loaded archive.

Oct 2025UFC Fight Night: Oliveira vs. GamrotFarmasi Arena · Rio de Janeiro · Brazil May 2024UFC 301: Pantoja vs. ErcegRio de Janeiro · Brazil Nov 2023UFC Fight Night: Almeida vs. LewisSao Paulo · Brazil Jan 2023UFC 283: Teixeira vs. HillRio de Janeiro · Brazil Mar 2020UFC Fight Night: Lee vs. OliveiraBrasilia · Brazil Nov 2019UFC Fight Night: Blachowicz vs. JacareSao Paulo · Brazil Aug 2019UFC Fight Night: Shevchenko vs. Carmouche 2Montevideo · Uruguay May 2019UFC 237: Namajunas vs. AndradeRio de Janeiro · Brazil

Assignment archive

Up to 80 recent loaded UFC bouts. Result source links remain attached at row level.

Date	Event	Fight	Result	Round / time	Source
Oct 11, 2025	UFC Fight Night: Oliveira vs. Gamrot	Jafel Filho vs Clayton Carpenter	Submission Jafel Filho won	R1 · 4:42	Official source ↗
Oct 11, 2025	UFC Fight Night: Oliveira vs. Gamrot	Vicente Luque vs Joel Álvarez	Unanimous Decision Joel Álvarez won	R3 · 5:00	Official source ↗
May 4, 2024	UFC 301: Pantoja vs. Erceg	Anthony Smith vs Vitor Petrino	Submission Anthony Smith won	R1 · 2:00	Official source ↗
May 4, 2024	UFC 301: Pantoja vs. Erceg	Iasmin Lucindo vs Karolina Kowalkiewicz	Unanimous Decision Iasmin Lucindo won	R3 · 5:00	Official source ↗
May 4, 2024	UFC 301: Pantoja vs. Erceg	Mauricio Ruffy vs Jamie Mullarkey	KO/TKO Mauricio Ruffy won	R1 · 4:42	Official source ↗
Nov 4, 2023	UFC Fight Night: Almeida vs. Lewis	Elves Brener vs Kaynan Kruschewsky	KO/TKO Elves Brener won	R1 · 4:01	Official source ↗
Nov 4, 2023	UFC Fight Night: Almeida vs. Lewis	Rodrigo Nascimento vs Don'Tale Mayes	Unanimous Decision Rodrigo Nascimento won	R3 · 5:00	Official source ↗
Jan 21, 2023	UFC 283: Teixeira vs. Hill	Jessica Andrade vs Lauren Murphy	Unanimous Decision Jessica Andrade won	R3 · 5:00	Official source ↗
Jan 21, 2023	UFC 283: Teixeira vs. Hill	Thiago Moisés vs Melquizael Costa	Submission Thiago Moisés won	R2 · 4:05	Official source ↗
Jan 21, 2023	UFC 283: Teixeira vs. Hill	Ismael Bonfim vs Terrance McKinney	KO/TKO Ismael Bonfim won	R2 · 2:17	Official source ↗
Mar 14, 2020	UFC Fight Night: Lee vs. Oliveira	Gilbert Burns vs Demian Maia	KO/TKO Gilbert Burns won	R1 · 2:34	Official source ↗
Mar 14, 2020	UFC Fight Night: Lee vs. Oliveira	Francisco Trinaldo vs John Makdessi	Unanimous Decision Francisco Trinaldo won	R3 · 5:00	Official source ↗
Mar 14, 2020	UFC Fight Night: Lee vs. Oliveira	Elizeu Zaleski dos Santos vs Aleksei Kunchenko	Unanimous Decision Elizeu Zaleski dos Santos won	R3 · 5:00	Official source ↗
Nov 16, 2019	UFC Fight Night: Blachowicz vs. Jacare	Douglas Silva de Andrade vs Renan Barao	Unanimous Decision Douglas Silva de Andrade won	R3 · 5:00	Official source ↗
Nov 16, 2019	UFC Fight Night: Blachowicz vs. Jacare	Charles Oliveira vs Jared Gordon	KO/TKO Charles Oliveira won	R1 · 1:26	Official source ↗
Aug 10, 2019	UFC Fight Night: Shevchenko vs. Carmouche 2	Rogerio Bontorin vs Raulian Paiva	KO/TKO Rogerio Bontorin won	R1 · 2:56	Official source ↗
Aug 10, 2019	UFC Fight Night: Shevchenko vs. Carmouche 2	Eduardo Garagorri vs Humberto Bandenay	Unanimous Decision Eduardo Garagorri won	R3 · 5:00	Official source ↗
Aug 10, 2019	UFC Fight Night: Shevchenko vs. Carmouche 2	Rodolfo Vieira vs Oskar Piechota	Submission Rodolfo Vieira won	R2 · 4:26	Official source ↗
May 11, 2019	UFC 237: Namajunas vs. Andrade	Laureano Staropoli vs Thiago Alves	Unanimous Decision Laureano Staropoli won	R3 · 5:00	Official source ↗
May 11, 2019	UFC 237: Namajunas vs. Andrade	Warlley Alves vs Sergio Moraes	KO/TKO Warlley Alves won	R3 · 4:13	Official source ↗
Feb 2, 2019	UFC Fight Night: Assuncao vs. Moraes 2	Demian Maia vs Lyman Good	Submission Demian Maia won	R1 · 2:38	Official source ↗
Feb 2, 2019	UFC Fight Night: Assuncao vs. Moraes 2	Geraldo de Freitas vs Felipe Colares	Unanimous Decision Geraldo de Freitas won	R3 · 5:00	Official source ↗
Nov 17, 2018	UFC Fight Night: Magny vs. Ponzinibbio	Michel Prazeres vs Bartosz Fabinski	Submission Michel Prazeres won	R1 · 1:02	Official source ↗
Nov 17, 2018	UFC Fight Night: Magny vs. Ponzinibbio	Jesus Pinedo vs Devin Powell	Unanimous Decision Jesus Pinedo won	R3 · 5:00	Official source ↗
May 19, 2018	UFC Fight Night: Maia vs. Usman	Gabriel Benitez vs Humberto Bandenay	KO/TKO Gabriel Benitez won	R1 · 0:39	Official source ↗
May 19, 2018	UFC Fight Night: Maia vs. Usman	Claudio Puelles vs Felipe Silva	Submission Claudio Puelles won	R3 · 2:23	Official source ↗
May 12, 2018	UFC 224: Nunes vs. Pennington	Mackenzie Dern vs Amanda Cooper	Submission Mackenzie Dern won	R1 · 2:27	Official source ↗
May 12, 2018	UFC 224: Nunes vs. Pennington	Warlley Alves vs Sultan Aliev	KO/TKO Warlley Alves won	R2 · 5:00	Official source ↗
May 12, 2018	UFC 224: Nunes vs. Pennington	Davi Ramos vs Nick Hein	Submission Davi Ramos won	R1 · 4:15	Official source ↗
Feb 3, 2018	UFC Fight Night: Machida vs. Anders	Timothy Johnson vs Marcelo Golm	Unanimous Decision Timothy Johnson won	R3 · 5:00	Official source ↗
Feb 3, 2018	UFC Fight Night: Machida vs. Anders	Iuri Alcantara vs Joe Soto	KO/TKO Iuri Alcantara won	R1 · 1:06	Official source ↗
Oct 28, 2017	UFC Fight Night: Brunson vs. Machida	Derek Brunson vs Lyoto Machida	KO/TKO Derek Brunson won	R1 · 2:30	Official source ↗
Oct 28, 2017	UFC Fight Night: Brunson vs. Machida	Antonio Carlos Junior vs Jack Marshman	Submission Antonio Carlos Junior won	R1 · 4:30	Official source ↗
Oct 28, 2017	UFC Fight Night: Brunson vs. Machida	Francisco Trinaldo vs Jim Miller	Unanimous Decision Francisco Trinaldo won	R3 · 5:00	Official source ↗
Jun 3, 2017	UFC 212: Aldo vs. Holloway	Vitor Belfort vs Nate Marquardt	Unanimous Decision Vitor Belfort won	R3 · 5:00	Official source ↗
Jun 3, 2017	UFC 212: Aldo vs. Holloway	Deiveson Figueiredo vs Marco Beltran	KO/TKO Deiveson Figueiredo won	R2 · 5:00	Official source ↗
Jun 3, 2017	UFC 212: Aldo vs. Holloway	Raphael Assuncao vs Marlon Moraes	Split Decision Raphael Assuncao won	R3 · 5:00	Official source ↗
Mar 11, 2017	UFC Fight Night: Belfort vs. Gastelum	Edson Barboza vs Beneil Dariush	KO/TKO Edson Barboza won	R2 · 3:35	Official source ↗
Mar 11, 2017	UFC Fight Night: Belfort vs. Gastelum	Paulo Costa vs Garreth McLellan	KO/TKO Paulo Costa won	R1 · 1:17	Official source ↗
Mar 11, 2017	UFC Fight Night: Belfort vs. Gastelum	Sergio Moraes vs Davi Ramos	Unanimous Decision Sergio Moraes won	R3 · 5:00	Official source ↗
Sep 24, 2016	UFC Fight Night: Cyborg vs. Lansberg	Michel Prazeres vs Gilbert Burns	Unanimous Decision Michel Prazeres won	R3 · 5:00	Official source ↗
Sep 24, 2016	UFC Fight Night: Cyborg vs. Lansberg	Erick Silva vs Luan Chagas	Submission Erick Silva won	R3 · 3:57	Official source ↗
Sep 24, 2016	UFC Fight Night: Cyborg vs. Lansberg	Francisco Trinaldo vs Paul Felder	KO/TKO Francisco Trinaldo won	R3 · 2:25	Official source ↗
May 14, 2016	UFC 198: Werdum vs Miocic	Jacare Souza vs Vitor Belfort	KO/TKO Jacare Souza won	R1 · 4:38	Official source ↗
May 14, 2016	UFC 198: Werdum vs Miocic	Sergio Moraes vs Luan Chagas	Draw	R3 · 5:00	Official source ↗
Aug 1, 2015	UFC 190: Rousey vs Correia	Iuri Alcantara vs Leandro Issa	Unanimous Decision Iuri Alcantara won	R3 · 5:00	Official source ↗
Aug 1, 2015	UFC 190: Rousey vs Correia	Reginaldo Vieira vs Dileno LopesTitle	Unanimous Decision Reginaldo Vieira won	R3 · 5:00	Official source ↗
Aug 1, 2015	UFC 190: Rousey vs Correia	Guido Cannetti vs Hugo Viana	Unanimous Decision Guido Cannetti won	R3 · 5:00	Official source ↗
Mar 21, 2015	UFC Fight Night: Maia vs LaFlare	Gilbert Burns vs Alex Oliveira	Submission Gilbert Burns won	R3 · 4:14	Official source ↗
Mar 21, 2015	UFC Fight Night: Maia vs LaFlare	Edimilson Souza vs Katsunori Kikuno	KO/TKO Edimilson Souza won	R1 · 1:31	Official source ↗
Mar 21, 2015	UFC Fight Night: Maia vs LaFlare	Fredy Serrano vs Bentley Syler	KO/TKO Fredy Serrano won	R3 · 1:34	Official source ↗
Dec 20, 2014	UFC Fight Night: Machida vs Dollaway	Leandro Issa vs Yuta Sasaki	Submission Leandro Issa won	R2 · 4:13	Official source ↗
Dec 20, 2014	UFC Fight Night: Machida vs Dollaway	Renato Moicano vs Tom Niinimaki	Submission Renato Moicano won	R2 · 3:30	Official source ↗
Oct 25, 2014	UFC 179: Aldo vs Mendes 2	Andre Fili vs Felipe Arantes	Unanimous Decision Andre Fili won	R3 · 5:00	Official source ↗
Oct 25, 2014	UFC 179: Aldo vs Mendes 2	Darren Elkins vs Lucas Martins	Split Decision Darren Elkins won	R3 · 5:00	Official source ↗
May 31, 2014	UFC Fight Night: Miocic vs Maldonado	Ricardo Abreu vs Wagner Silva	Submission Ricardo Abreu won	R2 · 1:06	Official source ↗
May 31, 2014	UFC Fight Night: Miocic vs Maldonado	Elias Silverio vs Ernest Chavez	Submission Elias Silverio won	R3 · 4:21	Official source ↗

Important: “fight impact” here means historical context, not causation. A referee does not choose the matchup, fighter styles, skill gap or scheduled length, so finish and decision rates must be interpreted with sample size and those confounders in mind.