Pesäpallon miesten Mestaruussarjan kausi 1981
Mestaruussarja

Runkosarja
| Joukkue | O | V | T | H | Juoksut | Pts | HT | JK | IPV | SMJ | KM | AA | SPo | KiU | KPL | HP | ViV | KaK |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Hyvinkään Tahko | 22 | 19 | 2 | 1 | 223-112 | 40 |  | 12-9 | 9-7 | 9-4 | 11-3 | 14-4 | 14-3 | 11-3 | 7-2 | 24-3 | 3-3 | 12-10 |
| Jyväskylän Kiri | 22 | 18 | 0 | 4 | 255-142 | 36 | 12-7 |  | 6-5 | 2-9 | 18-1 | 13-12 | 10-5 | 16-6 | 19-4 | 8-4 | 11-4 | 22-2 |
| Imatran Pallo-Veikot | 22 | 12 | 2 | 8 | 199-107 | 26 | 5-6 | 11-3 |  | 2-2 | 5-6 | 4-6 | 9-2 | 9-7 | 19-1 | 16-6 | 22-3 | 17-5 |
| Seinäjoen Maila-Jussit | 22 | 11 | 3 | 8 | 159-110 | 25 | 3-6 | 2-3 | 2-3 |  | 18-5 | 10-1 | 11-3 | 11-5 | 6-8 | 15-4 | 2-2 | 8-0 |
| Kankaanpään Maila | 22 | 11 | 1 | 10 | 127-158 | 23 | 3-3 | 4-14 | 5-2 | 3-2 |  | 6-3 | 7-11 | 12-7 | 3-0 | 13-0 | 5-3 | 3-7 |
| Alajärven Ankkurit | 22 | 10 | 2 | 10 | 186-174 | 22 | 6-7 | 5-8 | 12-5 | 8-8 | 2-11 |  | 8-4 | 14-9 | 12-2 | 12-4 | 5-4 | 8-5 |
| Siilinjärven Ponnistus | 22 | 10 | 1 | 11 | 129-159 | 21 | 1-4 | 7-16 | 6-6 | 6-8 | 11-1 | 9-5 |  | 4-2 | 15-6 | 3-2 | 1-5 | 8-6 |
| Kiteen Urheilijat | 22 | 9 | 1 | 12 | 190-194 | 19 | 4-17 | 10-12 | 5-20 | 17-7 | 8-6 | 8-8 | 16-12 |  | 13-4 | 3-6 | 14-4 | 19-5 |
| Kouvolan Pallonlyöjät | 22 | 8 | 0 | 14 | 117-197 | 16 | 11-15 | 6-12 | 1-7 | 3-9 | 8-4 | 10-7 | 1-3 | 6-5 |  | 5-1 | 8-4 | 9-4 |
| Haminan Palloilijat | 22 | 8 | 0 | 14 | 127-222 | 16 | 3-14 | 10-9 | 7-2 | 13-11 | 14-7 | 7-18 | 3-4 | 4-9 | 10-6 |  | 9-8 | 12-9 |
| Vimpelin Veto | 22 | 6 | 2 | 14 | 132-158 | 14 | 6-9 | 6-16 | 5-8 | 2-4 | 6-11 | 15-10 | 14-2 | 2-6 | 11-3 | 16-1 |  | 8-0 |
| Kauhajoen Karhu | 22 | 3 | 0 | 19 | 131-242 | 6 | 7-9 | 10-16 | 2-15 | 5-7 | 5-8 | 11-20 | 5-9 | 4-14 | 11-13 | 10-4 | 8-1 |  |
Mitalisarja
| Joukkue | O | V | T | H | Juoksut | Pts | HT | JK | SMJ | IPV | Lp>  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Hyvinkään Tahko | 6 | 4 | 0 | 2 | 34-18 | 11 |  | 11-1 | 8-4 | 5-3 | 3 |
| Jyväskylän Kiri | 6 | 4 | 0 | 2 | 39-39 | 10 | 6-4 |  | 11-6 | 7-2 | 2 |
| Seinäjoen Maila-Jussit | 6 | 3 | 0 | 3 | 34-36 | 6 | 2-1 | 5-9 |  | 10-5 | 0 |
| Imatran Pallo-Veikot | 6 | 1 | 0 | 5 | 25-39 | 3 | 2-5 | 11-5 | 2-7 |  | 1 |
Putoamissarja
| Joukkue | O | V | T | H | Juoksut | Pts | KiU | KPL | HP | ViV | Lp>  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Kiteen Urheilijat | 6 | 5 | 0 | 1 | 49-35 | 13 |  | 19-16 | 9-1 | 8-1 | 3 |
| Kouvolan Pallonlyöjät | 6 | 3 | 0 | 3 | 52-41 | 8 | 12-4 |  | 3-5 | 6-2 | 2 |
| Haminan Palloilijat | 6 | 2 | 0 | 4 | 29-46 | 5 | 3-6 | 5-13 |  | 13-6 | 1 |
| Vimpelin Veto | 6 | 2 | 0 | 4 | 26-34 | 4 | 2-3 | 6-2 | 9-2 |  | 0 |
Sarjasta putosivat Haminan Palloilijat, Vimpelin Veto ja Kauhajoen Karhu. Tilalle nousivat Ykkössarjan kolme parasta: Vaasan Maila, Jyväskylän Lohi ja Oulun Lippo.
Hyvinkään Tahko:
Markku Kuikka, Antti Laurila, Risto Korhonen, Juha Lamberg, Pertti Wirtanen, Kari Kuusiniemi, Stig Tainio, Ilkka Musto, Jari Laurila, Oiva Latikka, Paavo Pekkalin, Pelinjohtaja Aulis Paski, valmentaja Reijo Koivu.