| Thanomsak Sithbaobay | |
| Realname: | Tanom Kongsankam (ถนอม คงแสนคำ) |
| Weight: | Flyweight Junior bantamweight Bantamweight |
| Nationality: | Thai |
| Birth Date: | 5 April 1965 |
| Birth Place: | Maha Sarakham province, Thailand |
| Style: | Orthodox |
| Total: | 62 |
| Wins: | 56 |
| Ko: | 33 |
| Losses: | 6 |
| Draws: | 0 |
| No Contests: | 0 |
Thanomsak Sithbaobay (Thai: ถนอมศักดิ์ ศิษย์โบ๊เบ๊; born: April 5, 1965, in Maha Sarakham province) is a retired Thai professional boxer, who challenged the world champion three times, but not successful like Chamroen Songkitrat in 1950s. His other ring names were Thalerngsak Sithbaobay (เถลิงศักดิ์ ศิษย์โบ๊เบ๊), Khaoyai Mahasarakham (เขาใหญ่ มหาสารคาม), Khaoyai Pitsanurachan (เขาใหญ่ พิษณุราชันย์).
Sithbaobay debut in 1985 and won the Rajadamnern Stadium (comparable to Thailand Champion) Flyweight Champion in 1986. Include won the OPBF in the same year.
Later when Khaokor Galaxy lost WBA Bantamweight Title to Filipino Luisito Espinosa in 1989. His manager, Niwat "Chae-mae" Laosuwanwat (same manager as the galaxy brothers) managed him challenge the championship against Espinosa on November 29, 1990, at Rajadamnern Stadium, Bangkok. But the results he was defeated by unanimous decision.[1]
Until Khaosai Galaxy retired, the WBA Junior Bantamweight Title was vacant. He was encouraged challenge vacant against Japanese Katsuya "Spanky" Onizuka on April 10, 1992, at Tokyo Metropolitan Gymnasium, Tokyo. He was defeated again.
He rematch to Onizuka on November 5, 1993, at Ariake Coliseum, Tokyo, but was defeated again.
On May 5, 1996, he fought in the elimination fight with rising star Sirimongkol Singmanasak for the winner was supported challenge WBC Bantamweight Title. He was knocked out just third round.[2]
He fight the final with a loss to the Japanese Korean descent Tetsutora Senrima in 1998 in Kōbe, Japan. Then to retire in the end.