| Birth Date: | 29 April 1953 |
| Birth Place: | Moscow, Soviet Union |
| Sport: | Swimming |
| Club: | Dynamo Moscow (1965–1972) |
| Show-Medals: | yes |
Irina Valentinovna Pozdnyakova (Russian: Ирина Валентиновна Позднякова; born 29 April 1953) is a retired Russian swimmer. In 1966, aged 13, she set a world record in the 200 m breaststroke. The same year she won a silver medal at the 1966 European Aquatics Championships.
She is married to the Olympic volleyball player Vyacheslav Zaytsev; they have a daughter, Anna (born 1975), and a son, Ivan, an Olympic volleyball player. Both children hold Italian citizenship: Ivan was born on 2 October 1988 in Italy, where his father played for several years, whereas Anna married an Italian in 1993.