1981 A Thai sports brand was born, founded by a 25-year-old young man named Saneh Jaruwaraghirom — a former T-shirt salesman from the Sampheng district — who fought through hardship to become a business owner through hard work, honesty, determination, perseverance, and dedication. The company was originally established under the name Yus Sport Thailand Co., Ltd.
1991 Yus Sport Thailand Co., Ltd. was renamed Nationman Thailand Co., Ltd. The business expanded to accommodate its growing operations and relocated to a new factory at its current address: 23/186 Moo 8, Thetsaban 1 Road, Om Yai Sub-district, Sam Phran District, Nakhon Pathom Province.
- Nationman was honored to tailor and present sportswear to H.R.H. Princess Maha Chakri Sirindhorn on the occasion of Her Royal Highness presiding over the Khao Cha-ngok Mini Half Marathon Walk-Run event for three consecutive years from 1996 to 1998.
- Sportswear was also tailored and presented to H.R.H. Princess Soamsawali and H.R.H. Princess Bajrakitiyabha on the occasion of their participation in the same event.
- A warm-up suit was presented to H.R.H. Princess Maha Chakri Sirindhorn at the Chulachomklao Royal Military Academy. Her Royal Highness later wore the warm-up pants at the opening ceremony of the Boromrajchonnani Elevated Expressway in 2000.
- An order was also received for 2,500 warm-up jackets embroidered with the royal monogram of H.R.H. Princess Soamsawali, commissioned by the royal household secretariat at Pattaya Royal Villa.
1999 Nationman became a sponsor of the Prince's Cup International Amateur Muay Thai Championship — held in honor of H.R.H. Crown Prince Maha Vajiralongkorn — for nine consecutive years from 1999 to 2008.
2004 Nationman was granted a royal audience to present sportswear to H.M. Queen Sirikit for her personal use at Dusidalai Hall, Chitralada Royal Villa.
2008 Nationman tailored and presented sportswear to H.R.H. Princess Maha Chakri Sirindhorn and H.R.H. Princess Bajrakitiyabha on the occasion of their participation in the honor walk marking the 4th anniversary of the establishment of the Ministry of Tourism and Sports.
2013 Nationman was selected as the Official Main Sponsor for competition uniforms, sports equipment, and protective gear at the 27th SEA Games, held in Naypyidaw, Myanmar, from December 11–22, 2013.
2014 Nationman was selected as the Official Main Sponsor for competition uniforms, sports equipment, and protective gear at the 7th ASEAN Para Games, held in Naypyidaw, Myanmar, from January 14–20, 2014.