| Event: | Judo – Men's 81 kg |
| Games: | 2012 Summer |
| Venue: | ExCeL London |
| Competitors: | 8 |
| Nations: | 8 |
| Gold: | Olexandr Kosinov |
| Goldnpc: | UKR |
| Silver: | Jose Effron |
| Silvernpc: | ARG |
| Bronze: | Isao Cruz Alonso |
| Bronzenpc: | CUB |
| Bronze2: | Matthias Krieger |
| Bronzenpc2: | GER |
| Prev: | 2008 |
| Next: | 2016 |
The men's 81 kg judo competition at the 2012 Summer Paralympics was held on 31 August at ExCeL London.