| Radek Onderka | |
| Birth Date: | 20 September 1973 |
| Birth Place: | Opava, Czechoslovakia |
| Height: | [1] |
| Position: | Forward |
| Years1: | 1993 |
| Clubs1: | FC Baník Ostrava |
| Caps1: | 8 |
| Goals1: | 3 |
| Years2: | 1993–1997 |
| Clubs2: | SK Sigma Olomouc |
| Caps2: | 77 |
| Goals2: | 24 |
| Years3: | 1997–1998 |
| Clubs3: | KFC Uerdingen 05 |
| Caps3: | 31 |
| Goals3: | 7 |
| Years4: | 1999–2002 |
| Caps4: | 39 |
| Goals4: | 10 |
| Nationalyears1: | 1994–1996 |
| Nationalcaps1: | 7 |
| Nationalgoals1: | 0 |
Radek Onderka (born 20 September 1973) is a Czech former footballer who played as a forward. He made over 100 appearances in the Gambrinus liga.[2] [3] He also played in the 2. Bundesliga in Germany for two seasons.[4]
Onderka played international football at under-21 level for Czech Republic U21.
Onderka started his career with FC Baník Ostrava.[5]