| Kirill Martynychev | |
| Full Name: | Kirill Ivanovich Martynychev |
| Native Name: | Кирилл Иванович Мартынычев |
| Native Name Lang: | rus |
| Birth Date: | 5 May 2002 |
| Birth Place: | Saint Petersburg, Russia |
| Sport: | Swimming |
| Event: | Freestyle |
| Event Type: | Strokes |
Kirill Ivanovich Martynychev (Russian: Кирилл Иванович Мартынычев; born 5 May 2002) is a Russian swimmer. He competed in the 2020 Summer Olympics.[1]