| Personal information | |||
|---|---|---|---|
| Full name | Ronnachai Rangsiyo | ||
| Date of birth | 1 August 1988 | ||
| Place of birth | Sakon Nakhon, Thailand | ||
| Height | 1.82 m (5 ft 11+1⁄2 in) | ||
| Position(s) | Forward | ||
| Team information | |||
Current team | Samut Prakan City | ||
| Number | 14 | ||
| Youth career | |||
| 2003–2006 | Assumption College | ||
| 2007–2008 | Everton | ||
| Senior career* | |||
| Years | Team | Apps | (Gls) |
| 2006 | Rajpracha | 4 | (1) |
| 2008–2009 | PEA | 42 | (18) |
| 2008 | → Police United (loan) | 5 | (2) |
| 2009–2010 | Muangthong United | 8 | (7) |
| 2011–2012 | BEC Tero Sasana | 25 | (17) |
| 2013–2016 | Bangkok United | 52 | (12) |
| 2017 | Air Force Central | 14 | (2) |
| 2017 | Super Power Samut Prakan | 12 | (2) |
| 2018–2019 | Chiangmai | 23 | (6) |
| 2020 | Ayutthaya United | 3 | (1) |
| 2020–2021 | Rajpracha | 28 | (15) |
| 2021–2022 | Lamphun Warriors | 27 | (1) |
| 2022–2023 | Rajpracha | 32 | (8) |
| 2023– | Samut Prakan City | 11 | (2) |
| International career‡ | |||
| 2004–2005 | Thailand U17 | 8 | (3) |
| 2006–2011 | Thailand U23 | 9 | (2) |
| 2008–2010 | Thailand | 15 | (4) |
|
*Club domestic league appearances and goals, correct as of 30 April 2023 (UTC) ‡ National team caps and goals, correct as of 5 February 2009 | |||
Ronnachai Rangsiyo (Thai: รณชัย รังสิโย, born 1 August 1988), also known as Sam (Thai: แซม), is a Thai professional footballer who plays as a forward for Thai League 2 club Samut Prakan City. He scored four goals for the Thai national team and captained the country's under-23 team.