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
Middleweight Title [73kg/161lb] (as of 2025-07-19)
Because it is difficult to find comprehensive muay thai results in English, these lists are always "under construction." Also, Thai competitors change their names when they switch their gym affiliations, and the names on this list may not be always accurate. 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.
Sakchai Nakpayak
1953-08-02
Bangkok
Defeats Somsri Thiamkamhaeng to become the first champion; passes away on 53-11-14.
Prayut Udomsak
1954
Bangkok
Defeats Wittichai Prayut.
Sema Klasuek
1954
Daothong Singpanlop
1954
Suchai Kesongkram
1955<
Sema Klasuek [2]
1956<
Prayut Udomsak [2]
1950s
Korat
[...]
Daoprakai Sor.Pinijsak
1964-04-30
Bangkok
Defeats Srisawat Sit Sor.Por; stripped of the title after losing a non-title match on 64-09-08.
[...]
Sornchai Mallayut
1965
Bukdiew Yontharakit
1965-06-04
Bangkok
Stripped of the title in 66 following his arrest on charges of rape.
[...]
Dejthai Ithichai
1966
Rawee Dechachai
1966
Said to hold the title twice.
[...]
Arjun Hor.Mahachai
1968-11-10<
Yodthong Sahaisuk
1969-12-16<
[...]
Daenthai Ittichit
1970<
Former champion as of 70-11.
[...]
Vacant as of 77.
David Amornrat
1978-04<
Still champion as of 80-09-03.
Weerasak Payonkanchang
1980
Still champion as of 81-04-25; last champion before the title becomes inactive due to lack of the competitors.
