| Kiatjarern Ruangparn | |
| Fullname: | Kiatjarern Ruangparn |
| Birth Date: | 9 April 1982 |
| Birth Place: | Udon Thani, Thailand |
| Position: | Midfielder |
| Years1: | 2005–2016 |
| Clubs1: | Port |
| Caps1: | 104 |
| Goals1: | 10 |
| Years2: | 2016–2017 |
| Clubs2: | Air Force Central |
| Caps2: | 19 |
| Goals2: | 0 |
| Pcupdate: | 14 November 2008 |
Kiatjarern Ruangparn (Thai: เกียรติเจริญ เรืองปาน; born 9 April 1987) is a retired professional footballer from Thailand. He played in the 2010 Thai League Cup final and won a winner's medal after Thai Port defeated Buriram PEA F.C. 2-1.