| Petr Johana | |
| Height: | 1.89 m |
| Birth Date: | 1976 11, df=yes |
| Birth Place: | Most, Czechoslovakia |
| Position: | Defender |
| Youthyears1: | 1984–1990 |
| Youthyears2: | 1990–1995 |
| Youthclubs1: | SFK Meziboří |
| Youthclubs2: | Chemopetrol Litvínov |
| Years1: | 1995 |
| Years2: | 1995–1996 |
| Years3: | 1996–2000 |
| Years4: | 2000–2003 |
| Years5: | 2003–2005 |
| Years6: | 2005–2007 |
| Years7: | 2007–2008 |
| Years8: | 2008–2010 |
| Years9: | 2010–2014 |
| Years10: | 2014 |
| Clubs9: | Mladá Boleslav |
| Clubs10: | SIAD Most |
| Caps3: | 65 |
| Goals3: | 4 |
| Caps4: | 88 |
| Goals4: | 9 |
| Caps5: | 39 |
| Goals5: | 2 |
| Caps6: | 35 |
| Goals6: | 3 |
| Caps7: | 11 |
| Goals7: | 0 |
| Caps8: | 50 |
| Goals8: | 7 |
| Caps9: | 67 |
| Goals9: | 8 |
| Nationalyears1: | 2001–2003 |
| Nationalteam1: | Czech Republic |
| Nationalcaps1: | 13 |
| Nationalgoals1: | 0 |
Petr Johana (born 1 November 1976) is a former Czech professional footballer who lastly played for FK SIAD Most in the Czech National Football League.
Johana has played as a defender for Vestel Manisaspor in the Turkish Super League. Previous clubs he had played for during his career as a player before joining the Turkish League were FC MUS Most, FC Slovan Liberec and Sparta Prague.
He made his debut for the Czech Republic in a June 2001 World Cup qualification match against Denmark and has earned 13 caps, scoring one goal. His final international game was a November 2003 friendly match against Canada.