Following the name of the champion(s): Indicates the number of times the competitor has held that title at that point.
[...]
Indicates a gap in the listing where title changes are not known.
<
Title was held or changed hands no later than this. In these cases, it is known that a competitor held the title at a certain time but not when he/she won it.
@
Order uncertain. Different titleholders may be known for the same year, for example, but it is not known who held the title before whom.
#
Unofficial or disputable claims. These are usually matches that certainly took place, but where there is doubt that the competitor shown should be recognized as a true title holder. These listings are also italicized.
Rajadamnern Stadium
Flyweight Title [50.8kg/112lb] (as of 2025-05-17)
Because it is difficult to find comprehensive muay thai results in English, these lists are always "under construction." Thai competitors change their names when they switch their gym affiliations, and the names on this list may not be always accurate. Also, many Thai names are unavailable at this time. If you have corrections or additional information, please send in (with specifying the source, of course).
* Bolded letters in the competitor's name, if any, indicate the surname/family name.
Kwanyuen Sitsing
1960
First champion.
[...]
Plainoi Ror.For.Tor
1961-10-19
Bangkok
Defeats Payaknoi Sitthiamlee.
[...]
Saenchai Therdthai and Khunphaen Muangthong fight for the vacant title to a draw on 63-01-08.
Payaknoi Sitthiamlee
1963
Suchart Srisothon
1963-03-21
Bangkok
Vacant as of 63-05.
Saenchai Therdthai
1963-06-06
Bangkok
Defeats Khunpaen Muangthong.
[...]
Suchart Srisothon
1964
Pacchai Srijanphos
1964-05-21
Bangkok
Still champion as of 65-06-25.
[...]
Jomkitti Singphaniang
1967-07-26<
[...]
Ritthichai Lukkaojao
1968-05-06
Bangkok
Defeats Wichannoi Porntawee (defends the title on this day); vacant in 68.
Wichannoi Porntawee
1968-09-18
Bangkok
Defeats Kiatpatum Dejpaisan; still champion as of 69-02-17.
[...]
Chainoi Sor.Siripan
1971
Defeats Noknoi Singthanongsak; stripped of the title in 72 for being knocked out during a non-title match against Samersing Tianhiran.
Samersing Tianhiran
1973
Defeats Chainoi Sor.Siripan; vacant in 73.
Naret KiatChor.Por.
1974-02-13
Bangkok
Defeats Rueanpae Sitwatnang.
Ruengsak Porntawee
1974-04-20
Bangkok
Vacant in 74.
Raklek Shutinavi
1974-11-30
Tōkyō, JPN
Defeats Kotchasarn Pongchalon; vacant in 75.
Kengkaj Kiatkriangkrai
1976-07-15
Tōkyō, JPN
Defeats Numtanong Suanmiskwan; vacant in 77.
Tawanook Sitpoonchai
1977-05-02
Bangkok
Defeats Khaosod Sitpraprom; still champion as of 77-06-02.
[...]
Lankrung Kiatkriankgrai
1982-12-24
Bangkok
Defeats Boonnam Sor. Jarunee.
Sangyuth Thianhiran
1984-10-01
Bangkok
Boonam Sor.Jarunee
1984-11-21
Bangkok
Still champion as of 85-06-24; vacant in 85.
Sangyuth Thianhiran [2]
1985-09-06
Bangkok
Defeats Detduang Por.Pongsawang.
[...]
Noppachai Lukmingkwan
1986-02-13<
Lukchang Sitchang
1986-08-11
Bangkok
Waifai PraphatMotors
1987-04-11
Bangkok
Boonmee Sitchuchon
1987-06-15
Bangkok
Still champion as of 87-09 (Ring International, 87-10/11); vacant in 87.
Samernoi Tor.Boonlert
1988<
Veeraphol Sahaprom
1988-03-24
Bangkok
Dennuea Denmolee
1989-01-15
Bangkok
Kaensak Sor.Ploenjit
1989-06-05
Bangkok
Vacant in 89.
[...]
Banluedet Lukprabaht
1991-01-30
Bangkok
Defeats Samernoi Tor.Boonlert.
Samernoi Tor.Boonlert
1991
[...]
Thapisut Sor.Maliwan
1992
Kukkong Por.Surasak
1992-12-12
Bangkok
[...]
Kwanna Tor.Boonlert
1993
Defeats Rolex Kaennorasing.
[...]
Rolex Kaennorasing
Defeats Chatchai Sor.Suwanpakdee.
[...]
Plathong JockyGym
1996
[...]
Lanna Por.Phisut
1990s
[...]
Asawin Kiatmonthep
1990s
[...]
Anuwat Kaewsamrit
2000-02-02
Bangkok
Defeats Prakaipetch Kiatpailin; vacant in 00.
Pornnimat Kaitchansing
2000
Vacant in 00.
Chomputhong Kiatniwat
2000
Defeats Thamindong Na Rachawat.
[...]
Orono Sor.Sakulpan
[...]
Pongsing Kiatchansing
2002<
[...]
Kwanphichit Hor.Pattanachai
2003
[...]
Chatchainoi Sitbenjama
2003-10-26
Bangkok
Defeats Kwanphichit Hor.Pattanachai; vacant in 03; still vacant as of 04-01.
Kanid Sitkhrusem
2004-06<
Still champion as of 04-08.
[...]
Mapralong Sitpotarn
2005-02<
Vacant as of 05-11, 06-11, 07-11, and 08-05.
[...]
Denmoo 9 Soonkelarhuaytom
2008
Still champion as of 09-02.
[...]
Ponkrit Numplatahoimook
2009-12<
Still champion as of 10-08.
[...]
Lamnammoon Sakchaichote
2011-05<
Still champion as of 11-09
Ponkrit Numplatahoimook
2011-10<
Still champion as of 11-11.
Lamnammoon Sakchaichote [2]
2012-01<
Vacant as of 12-04.
Prajanchai Por.Phetnamtong
2012-04-19
Bangkok
Defeats Meethee Kiatpratoom.
Sangmanee Sor Tienpo
2012-11-09
Bangkok
[...]
Trakulphet Sor.Sommay
2013-03<
Still champion as of 14-03; vacant as of 14-05.
Nichao Suvitgym
2014-06-05
Bangkok
Defeats Petrat Wor Wiwatananon; vacant in 14.
[...]
Konkobdai Wor.Watananont
2015-01<
Still champion as of 15-04.
Dokmaidang J.S.P.
2015-05-06
Bangkok
Saoek KezaGym
2016-05-12
Bangkok
Still champion as of 16-12; vacant as of 17-05-02.
Chatploy Sor.Punsawat
2017-06-03
Bangkok
Defeats Chokdee Maxjandee; still champion as of 17-11-15; vacant in 18.
Phetsommai Sor.Sommai
2018-08-08
Bangkok
Defeats Chokplerngrit Phor.Lakboon; vacant in 19.
Petchsomjit Jitmuangnon
2019-11-25
Bangkok
Defeats Chokplerngrit Phor.Lakboon; title inactive in 21 due to the COVID-19 pandemic; Petchsomjit may have vacated the title in 19.
Petchdetch Wor.Sungprapai
2022-03-24
Bangkok
Defeats Dinnertong Muadpong191.
Paeyim Sor Boonmerit
2022-09-29
Bangkok
Vacant in 23.
WaeoWao Wor.Wangprom
2023-05-18
Bangkok
Defeats KaenUbon Por.Lakboon.
Nadaka EiwaSportsGym (Yoshinari Nadaka)
2023-07-09
Tōkyō, JPN
Defeats Waewwaw Wor.Klinpathum; vacates in 23-12 upon moving up to the super flyweight class.
KaenUbon Por.Lakboon
2023-12
Interim champion since defeating Waewwaw Wor.Klinpathum on 23-10-05; status promoted.
