| Pyotr Grigoryev | |
| Fullname: | Pyotr Grigoryevich Grigoryev |
| Birth Date: | 3 January 1899 |
| Birth Place: | Saint Petersburg, Russia |
| Death Place: | Leningrad, USSR |
| Position: | Striker |
| Years1: | 1917 |
| Years2: | 1921–1923 |
| Years3: | 1924–1926 |
| Years4: | 1927–1928 |
| Years5: | 1929 |
| Years6: | 1930–1938 |
| Clubs6: | Elektrik Leningrad |
| Nationalyears1: | 1924–1925 |
| Nationalteam1: | USSR |
| Nationalcaps1: | 2 |
| Nationalgoals1: | 0 |
Pyotr Grigoryevich Grigoryev (Russian: Петр Григорьевич Григорьев; 3 January 1899 – 12 November 1942) was a Soviet football player. He died in Leningrad during the Second World War siege of that city.
Grigoryev made his debut for USSR on 16 November 1924 in a friendly against Turkey.