| Ken Matsui | |
| Headercolor: | Gold |
| Birth Name: | 松井健 |
| Birth Date: | 15 January 2001 |
| Birth Place: | Aichi, Japan |
| Height: | 161 cm |
| Sport: | Amateur Wrestling |
| Weight Class: | 55 kg |
| Event: | Greco-Roman |
| Worlds: | (2021) |
Ken Matsui (born 15 January 2001) is a Japanese Greco-Roman wrestler. He won the gold medal in the 55 kg event at the 2021 World Wrestling Championships in Oslo, Norway.[1] [2] [3]