Chainarong Tathong (Thai: ชัยณรงค์ ทาทอง, born 31 January 1987), simply known as Bie (Thai: บี้) is a Thai professional football player who plays as a striker for Pattaya United. Chainarong’s brother, Wuttichai Tathong, is also a footballer and plays for Port as a striker.
At BBCU, Chainarong was the 2010 Thai Division 1 League top scorer with 19 goals. Muangthong United bought him from BBCU in 2012. In 2013, he was loaned to Army United. In the second leg of the 2013 Thai Premier League, Chainarong came back to Muangthong after impressive form with Army United. He scored his first Muangthong United goal against Samut Songkhram. Later in the season, Chainarong scored his second goal for Muangthong against Suphanburi, marking his first goal at SCG Stadium. In recent seasons, he has again gone out on loan from Muangthong, spending 2015 with Osotspa Samut Prakan. He started 2016 on loan with BEC Tero Sasana, and is currently at PTT Rayong.
Chainarong was called up to the national team for the 2015 AFC Asian Cup qualification against Kuwait and Iran, but didn’t get a chance to play. Chainarong was also part of Thailand’s squad in the 2014 AFF Suzuki Cup.