Herrarnas barr i gymnastik vid olympiska sommarspelen 2012 avgjordes den 7 augusti 2012 för 9 gymnaster från totalt 6 nationer. De deltagande kvalificerade sig för friståendet genom kvaltävlingen - däremot fick maximalt två gymnaster från samma land kvalificera sig.

Medaljörer Herrarnas barr

Resultat Kval Placering Gymnast Nation Totalt 1 | style="height:30px; text-align:left;"|Yusuke Tanaka||style="text-align:left;"|||6,400||9,466||||15,866||Q 2 | style="height:30px; text-align:left;"|Kazuhito Tanaka||style="text-align:left;"|||6,700||9,025||||15,725||Q 3 | style="height:30px; text-align:left;"|Feng Zhe||style="text-align:left;"|||7,000||8,633||||15,633||Q 4 | style="height:30px; text-align:left;"|Emin Garibov||style="text-align:left;"|||6,500||9,100||||15,600||Q 5 | style="height:30px; text-align:left;"|Kōhei Uchimura||style="text-align:left;"|||6,500||9,033||||15,533|| -* |- | scope=row style="text-align:center" | 6Marcel Nguyen6,8008,72515,525Q

| scope=row style="text-align:center" | 7Vasileios Tsolakidis6,5008,96615,466Q

| scope=row style="text-align:center" | 8Daniel Corral6,6008,83315,433Q

| scope=row style="text-align:center" | =9Hamilton Sabot6,5008,86615,366Q

| scope=row style="text-align:center" | =9Zhang Chenglong6,5008,86615,366Q |- style="background:#cccc99;" | scope=row style="text-align:center" | 11Samuel Piasecky6,4008,95815,358R |- style="background:#cccc99;" | scope=row style="text-align:center" | 12Danell Leyva6,6008,73315,333'''R

Final Placering Gymnast Nation Totalt Feng Zhe7,0008,96615,966 Marcel Nguyen6,8009,00015,800 Hamilton Sabot6,7008,86615,566 4Kazuhito Tanaka6,7008,80015,500 5Daniel Corral6,6008,73315,333 =6Emin Garibov6,5008,80015,300 =6Vasileios Tsolakidis6,5008,80015,300 8Yusuke Tanaka6,4008,70015,100 9Zhang Chenglong6,3007,50813,808

Referenser